The Corded Ware culture societies inhabiting the Carpathian zone used various outcrops of flints to processing axes: Volhynian, Turonian (the Świeciechów and the Gościeradów types), Jurassic A and G-type, cretaceous K-type as well as siliceous marl and radiolarite. From the analysed area 81 axes associated with the Corded Ware culture are known. Most of them come from funeral sites — from grave pits or burial mounds. The predominance of the Volhynian flint is observable in the whole area to the east of Wisłok River, basins of the San River, and in the upper basins of the Tisza and Dniester Rivers. Axes from niche graves on the Rzeszów Foothills, where the Świeciechów flint prevails, are specific in this scope or raw materials distribution. Dispersion of flints can be used indirectly as basis for reconstructing movements of human groups using these raw materials, as well as determining directions of their interactions. It can be noticed that communities of the Corded Ware culture from the Dniester Basin resembled in this respect their counterparts from the Roztocze and the Sokal Ridge, while those from the Rzeszów Foothills shows connections both with the“Volhynian zone” and the Lesser Polish Małopolska Upland.

Potential sources of rare earth elements are sought after in the world by many researchers. Coal

ash obtained at high temperatures (HTA ) is considered among these sources.

The aim of the study was an evaluation of the suitability of the high temperature ash (HTA ) formed

during the combustion of bituminous coal from the Ruda beds of the Pniówek coal mine as an

potential resource of REY . The 13 samples of HTA obtained from the combustion of metabituminous

(B) coal were analyzed.

The analyses showed that the examined HTA samples varied in their chemical composition.

In accordance with the chemical classification of HTA , the analyzed ash samples were classified

as belonging to the following types: sialic, sialocalcic, sialoferricalcic, calsialic, fericalsialic,

ferisialic.

The research has shown that the rare earth elements content (REY ) in examined HTA samples

are characterized by high variability. The average REY content in the analyzed ashes was 2.5 times

higher than the world average (404 ppm).

Among rare earth elements, the light elements (LREY ) were the most abundant. Heavy elements

(HREY ) had the lowest share.

A comparison of the content of the individual rare earth elements in HTA samples and in UCC

showed that it was almost 20 times higher than in UCC.

The distribution patterns of REY plotted for all samples within their entire range were positioned

above the reference level and these curves were of the M-H or M-L type. The data presented indicate, that the analyzed ash samples should be regarded as promising REY

raw materials. Considering the fact that in 7 out of 13 analyzed ash samples the REY content was

higher than 800 ppm, REY recovery from these ashes may prove to be economic.

Results of the investigation of thermal degradation of polyolefins in the laboratory-scale set-up reactors are presented in the paper. Melting and cracking processes were carried out in two different types of reactors at the temperature of 390-420°C. This article presents the results obtained for conversion of polyolefin waste in a reactor with a stirrer. Next, they were compared with the results obtained for the process carried out in a reactor with a molten metal bed, which was described in a previous publication. For both processes, the final product consisted of a gaseous (2-16 % mass) and a liquid (84-98 % mass) part. No solid product was produced. The light, "gasoline" fraction of the liquid hydrocarbons mixture (C4-C10) made up over 50% of the liquid product. The overall (vapor) product may be used for electricity generation and the liquid product for fuel production.

The paper presents brown coal as one of the two basic domestic energy raw materials apart from hard coal. Historically, the use of brown coal in Poland is primarily fuel for the power plants. It was used for the production of lignite briquettes in small quantities and as fuel for local boiler houses and as an addition to the production of fertilizers (Konin and Sieniawa). At present, after changes in the case of the quality of fuels used in local boiler plants, brown coal remains as a fuel for the power plants in almost 100%. Currently, the brown coal industry produces about 35% of the cheapest electricity. The cost of electricity production is more than 30% lower than the second basic fuel – hard coal. The existing fuel and energy complexes using brown coal, with the Bełchatów complex at the forefront, are now an important guarantor of Poland’s energy security. In contrast to the other fuels such as: oil, natural gas or hard coal, the cost of electricity production from brown coal is predictable in the long term and almost insensitive to fluctuations in global commodity and currency markets. Its exploitation is carried out using the high technological solutions and respecting all environmental protection requirements, both in the area of coal extraction and electricity generation. Importantly, the fuel and energy complexes using brown coal showed a positive profitability so far and generated surpluses enabling the financing of maintenance and development investments, also in other energy segments. In particular, the sector did not require and has yet not benefited from public aid in the form of, for example, subsidies or tax concessions. Polish brown coal mining has all the attributes necessary for long-term development to ensure the country’s energy security. The document which is a road map for the brown coal industry is the Program for the Brown Coal Mining Sector in Poland adopted by the Council of Ministers on May 30, 2018. The Program covers the years 2018–2030 with a perspective up to 2050 and presents the development directions of the brown coal mining sector in Poland together with the objectives and actions necessary to achieve them. The Program presents a strategy for the development of brown coal mining in Poland in the first half of the 21st century. Possible scenarios have developed in active mining and energy basins as well as in new regions with significant resources of this mineral. This is to enable the most efficient use of deposits in the Złoczew and Konin regions as well as the Gubin and Legnica brown coal basins, and then deposits located in the Rawicz region (Oczkowice) as well as other prospective areas that may eventually replace the existing active mining and energy areas. This will allow power plants to continue to produce inexpensive and clean electricity, using the latest global solutions in the field of clean coal technologies.

The Legnica deposit is one of the most prospective in the context of future lignite mining. Its extraction will be inseparable from the removal of the rocks of the overburden, the volume of which is very large. Due to the raw material properties, some of the rocks can be classified as accompanying minerals. The raw material identification of overburden sediments in the Legnica lignite deposit is insufficient. So far, they haven’t been the subject of detailed and comprehensive research to prove their usefulness. The article was a summary of the knowledge on this subject. The following should be included in the accompanying minerals: Quaternary sands and gravels, tertiary sands and clays (Poznan clays). They are present in two colour variants in the Legnica deposit - and fiery. The mineral composition of greenish-blue clays allows them to be included in illite-kaolinite- smectite varieties, in turn fiery clays as kaolinite-illite-smectite varieties. The tertiary clays are a very useful raw material for the production of building materials. In addition, they are potential mineral sorbents due to the nature of the association of clay minerals (occurrence of montmorillonite). They also show suitability for building waterproofing barriers. Quaternary gravels and sands, developed in the overburden Legnica deposit are differentiated raw materials. Some of them are raw materials for the construction industry. The glacial tills can be used as a component of ceramic mixtures. Tertiary sands can be used as a proppant material. The information on the raw material properties of these sediments will be one of the essential criteria for their treatment as accompanying minerals. Minerals accompanying those developed in the Legnica deposit should be exploited and deposited selectively. The creation of anthropogenic deposits accumulating these minerals will provide the possibility of their use for decades after the termination of operation.

As of the spring of 2017, the HAŁDY Database is available on the Polish Geological Institute – NRI website. The geodatabase contains information and data on waste mineral raw materials collected on old heaps, industrial waste stock-piles and in post-mining settlers, from the Polish part of the Sudety Mountains. The article presents the types of data and information contained in the geodatabase and the methodology for their collection. As a result of four-year research works, field reconnaissance, archives and geological basic research, 445 objects of former mining and mineral processing were inventoried. There are 403 mine heaps, 16 industrial settlers, 23 stock-piles and 3 external dumps. These are mainly objects after coal mining and metal ores, including post-uranium. The greatest opportunities for the economic use of waste are associated with coal sludge accumulated in settlers of the liquidated Lower Silesian Coal Basin. The material from stone heaps after polymetallic, iron and fluorite ore mining is also easy to use. The issue of the economic use of post-flotation copper ore waste or the recovery of metals (including gold) from dumps of arsenic mining remains open. The limitation here is the efficiency of metal recovery technologies and environmental restrictions. Some of the objects are located in protected areas, which excludes the possibility of waste management. Some stock-piles and heaps should be carefully reclaimed and covered by environmental monitoring, due to their harmful impact on environmental components.

The first Mineral Policy in Poland was prepared in 1938. In that time The Mineral Policy was primarily dedicated to preparing Poland for a defensive war. The Central Geology Authority (CGA) was created in 1991. The main task of this Authority was preparation plans (annual and multiannual) of geological-exploration. The CGA’s activities were focused on enhancing the resource base of mineral deposits. As of 1985 the coordination of geological tasks is the main duty of the Chief Geologist of the country. In 1996 the Council of Ministers adopted a document called State policy in the field of mineral resources, prepared at the Ministry of Environmental Protection, Natural Resources and Forestry as well as the Ministry of Industry and Trade. In 2015 a wide public discussion about the need to develop a mineral raw materials policy, initiated by the publication of three analytical documents prepared by the Demos Foundation, Professor J. Hausner and the Ministry of the Environment took place. Milestones in the development of a national mineral raw materials policy was the establishment of the special government’s plenipotentiary as well as the inter-ministerial team for mineral raw materials policy. In 2018, The Mineral Raw Materials Policy was transferred for public consultation. This document is the first document that is so comprehensive and holistic from the point of view of national mineral security interests. The Mineral Raw Materials Policy is based on 9 substantial pillars among them: economical and legal basis of mineral sector activities, investment risk, geological prospection and exploration, utilization of mineral wastes.

The authors established the chemical and phase compositions of grain fractions of the magnesia carbon scrap disintegrated using industrial cone crushers. The investigations included chemical and XRD analyses and optical investigations. The contents of admixtures: SiO2, CaO, Fe2O3 and Al2O3 increase with the decreasing size of the scrap grain fractions, whereas the C/S ratio decreases in finer and finer fractions due to changes of the phase composition. These relations are caused by the presence of low-fusible silicate phases, characterized by their cleavage and brittleness. Such phases were mainly derived from the graphite ash containing a high silica content. The scrap after removing its finest grain fractions can be recycled and utilized for producing the magnesia-carbon refractory materials. However, the finest grain fractions may be used, e.g. as a component of gunite mixes. Many years of experience collected by the ArcelorMittal Refractories Ltd., Krakow, Poland in the field of refractory scrap utilization has also been presented.

Building a Strategic Battery Value Chain in Europe COM/2019/176 is a priority for EU policy. Europe’s current share of global cell production is only 3%, while Asia has already reached 85%. To ensure a competitive position and independence in the battery market, Europe must act quickly and comprehensively in the field of innovation, research and construction of the infrastructure needed for large-scale battery production. The recycling of used batteries can have a significant role in ensuring EU access to raw materials. In the coming years, a very rapid development of the battery and rechargable battery market is forecast throughout the EU. In the above context, the recycling of used batteries plays an important role not only because of their harmful content and environmental impact, or adverse impact on human health and life, but also the ability to recover many valuable secondary raw materials and combine them in the battery life cycle (Horizon 2010 Work Programme 2018–2020 (European Commission Decision C(2019) 4575 of 2 July 2019)). In Poland, more than 80% of used batteries are disposable batteries, which, together with municipal waste, end up in a landfill and pose a significant threat to the environment. This paper examines scenarios and directions for development of the battery recycling market in Poland based on the analysis of sources of financing, innovations as well as economic and legal changes across the EU and Poland concerning recycling of different types of batteries and rechargable batteries.

The assurance of future raw materials supply to the EU mineral industry has become, in recent years, one of the priority tasks of the EU Commission, geological surveys and several research centers. After many years of negligence, the problem of developing supply risk of many raw materials in Europe has been perceived, along with the menace to the EU economy competitiveness coming from dynamically developing countries such as China, India and others - basically of Asian origin. This has initiated a new mineral policy within the EU zone, referring mainly to non-fuels. One of the starting points for this activity has become the assessment of the EU mineral resources potential and identification of the raw materials that are critical for the harmonious and sustainable development and technological progress. The paper briefly presents the results of research work focused on the critical raw materials assessment, which were conducted by the Initiative for the Raw Materials Supply. Its core is the presentation of Polish mineral reserve base and its potential as a possible source of critical raw materials for the European Union. The criticality analysis was based on three categories, i.e.: economic consequences of the supply limitation, supply risk of reduction (fluctuation or disruption), and environmental risk referring to countries with weak environmental performance in order to protect the environment that jeopardize the supply of raw materials to the EU. For their quantitative assessment there were proposed three aggregated indices, while for the forecast purposes - 10-year period. The criticality ratio was determined for the 41 most important and most frequently used raw materials. On the grounds of the research made up to now, these raw materials were preliminary divided into three groups. As a critical to the EU economy, 14 raw materials of major economic importance were discriminated, i.e.: antimony, beryllium, cobalt, fluorite, gallium, germanium, graphite, indium, magnesium, niobium, PGM, rare earths, tantalum, and tungsten. They are characterized by high supply risk, which is mainly due to limited number of their sources - dominated by a few countries, in particular China. The risk of supply disruptions is boosted by low rate of utilization of secondary sources, and limited scale of substitution as well. The majority of the above-mentioned raw materials are crucial for the new technologies development. The remaining minerals arealso - though to a lesser extent - imperiled with a supply deficit. Despite they are also of economic importance, their indispensability for the advanced technologies development is relatively smaller. Taking into account the raw materials that are critical for the European Union economy, Poland cannot be considered as its resource base. The source of these raw materials are not only scarce in Poland, but also they are not produced, and their demand is now - and according to forecasts is going to be in the future - met by imports. However, the role of our country as a manufacturer of finished products from components of foreign origin is anticipated to increase. The raw materials in question are not considered exactly critical for Polish economy, as any industrial branch based upon their utilization has emerged so far. Therefore, they are of limited economic importance. Presumable utilization of very limited sources of above-mentioned critical raw materials in Poland could be anticipated in a perspective of at least 20 years. The most probable in this respect are the following: opening out the new Mo-W-Cu ore deposit Myszków, and the promotion of exploration works for similar deposits.

The problem of deposit protection and the process of liquidation of mining plants does not find effective solutions in the national law. Nevertheless, this is a very up-to-date issue. This situation prompted the authors of the article to once again analyze these issues. The number of abandoned exploitation sites which were published in the Polish Geological Institute reports should affect the entire licensing system and the state’s raw material policy. As a good host of raw materials, which we have been given by Earth Mother, we cannot allow that the mining licensing system, the liquidation procedures of mining plants without due diligence, result in the lack of protection of these deposits. The rational raw material economy and the ability to exploit it for the future generations, while failing to effectively enforce the site liquidation process makes it necessary to take actions leading to not blocking the mineral deposits in this way. The analysis shows what appropriate actions should be taken. The authors have thoroughly investigated the legal regulations over the past century, compiling them with the current legislation, and pointing out the weaknesses of the system in the field of deposits protection, particularly in the part of the unexploited deposits. Criticism covered both the statutory regulations – Geological and mining law as well as executive acts in the field of deposit protection. A separate analysis was subjected to the procedure of liquidation of the mining plants in the aspect of deposits protection, for mining plants operating on the basis of the Province Marshal’s licenses. The process presented in the flowchart layout clearly shows the weak points of the currently operating system.

An attempt to summarize the primary iron raw materials and steel market’s hundred years history as well as influence of economic indicators on the iron ore deposit qualification for extraction has been undertaken in the paper. Steel products are crucial to the world economy, and their production has a major impact on the environment. The main factor is the huge scale of the production and growth rate, unprecedented among minerals. Iron ore and concentrates production has increased more than thirty times over the past century, and the geological resource base at the current level of consumption has provided almost 250 years of sufficiency. There have been tremendous changes in the world geography of the ore and steel industry. The iron ore mining industry is the driver of other economic activities (land transport, freight, metallurgy) and involves huge capital and human resources. The consumption of iron raw materials is also considered as an important indicator of the countries development and current or even future economic situation. Population growth remains one of the key stimulating factors. The prices of ore and iron concentrates depend on the quality of the raw material, delivery conditions, market balance and the weight of the ordered cargo. They are usually the subject of negotiations. In the past, they were long-term contracts, while short-term (yearly, quarterly) and current spot transactions are now significant. The prices of ores and concentrates in relation to steel prices are showing a strong correlation. The average iron content of the reserves has been reduced in the largest producers in the 21st century, however it does not translate into the quality of mining output. Exploitation of the richer parts of the mineral deposit is usually carried out. The high content of iron in the output is a response to the technological requirements of the metallurgy where the blast furnace charge should contain at least 56% Fe and 5–8% FeO. The current surplus of geological-mining supply (large resource base) justifies that a mineral deposit choice, destined for excavation, is economic profit maximization as well as social and environmental considerations.

In view of the world’s recent changes in the mineral market, it is becoming increasingly important to ensure the sustainable and secure supply of raw materials, both within the European Union and in other high-developed countries. In response to this global challenge, as part of the European Commission’s Horizon 2020 Program for Research & Innovation, the 36-month INTRAW project was launched in February 2015 to foster international cooperation on raw materials. The EU-funded INTRAW project was set up to map and develop new cooperation opportunities related to raw materials between the EU and other technologically advanced countries, such as: Australia, Canada, Japan, South Africa and the United States. The first stage of the project was a review of conditions for the stable supply of raw materials from primary and secondary sources in selected countries: the United States, Canada, Australia, South Africa and Japan. The results of the work are two groups of comprehensive reports. The first of these is a broad contextual analysis of geological, environmental, political, technical -economic and social factors conducive to the effective management of mineral resources. The second group is operational reports, carried out in three thematic blocks: industry and trade, research and innovation, education. The analysis clearly shows that the basis for effective action in this area is a stable political, economic and institutional environment, which is friendly to mining and new entities wishing to invest in modern technologies, the exploration and exploitation of deposits. Investors are encouraged by tax regulations, sometimes also by direct government financial support and efficient licensing procedures. The well-defined protection of property rights, also for deposits is equally important. Selected aspects of a wide analysis of determinants of competitiveness for these countries were presented in the article below.

The Tertiary lignite formations in the Bełchatów deposit, along with coal, are built of plastic, weakly compact and loose rocks. Their physical and mechanical parameters, don’t pose operational problems. However, varieties of a different lithological character and physical-mechanical properties rocks, causing difficulties when mining the overburden rocks, appear within them. These include: Mesozoic limestones, Tertiary sandstones and conglomerates, as well as Quaternary iron feldspar rocks. The article features a lithological characterization as well as values of basic physico-mechanical parameters. They form the basis of the geological engineering classification and decide about their difficult workability. The possibilities of their raw material utilization were also discussed.

This article presents the effects of the application of the passive method of flue gas purification from mercury compounds emitted during combustion. The research was carried out on a fluidized bed installation using coal. The dry method of acid gas pollutants reduction was applied during the combustion with the use of 9 modified sodium sorbents. They were fed into a gas jet of 573 K in two molar ratios (sodium contained in the sorbent to the sulphur contained in the fuel). The mercury emission level into the atmosphere was determined based on the mercury content in the solid substrates of the combustion process (in the fuel and the sorbent) and the solid products (fly ash and bottom waste). The combustion process was accompanied by mercury emission 14.7 μgHg/m3. During the removal of acid pollutants from fumes, a decrease in mercury concentration was achieved. The degree of the mercury reduction depended on the type the sorbent used, the manner of modification and the molar ratio in which they were fed into the installation (2 Na/S = 0.5; 2.1). Each time, the more the sorbent was fed into the installation, the bigger the reduction of the mercury emission level. Among the unmodified sorbents, the lowest emission level was achieved for the raw bicarbonate – 3.7 μgHg/m3. For baking soda it was 9.7 μgHg/m3. The application of mechanically modified compounds based on baking soda resulted in the reduction of the Hg emission in fumes up to 2.5–2.6 μgHg/m3. The determined mercury concentration levels in the gases during the purification of the fumes were compared with the accepted Hg emissions contained in the BAT conclusions for large combustion plants. As for all of the existing and newly built plants with a heat capacity below 300 MW, satisfactory effects would be achieved by the use of mechanically modified sorbents in the molar concentration of 2 Na/S = 2.1.

Middle Palaeolithic land exploitation strategies remain as yet an unexplored element in our understanding of Neanderthal behavioural patterns. Many different approaches to the problem were so far developed. Among others, biological, economic or environmental data concerning Neanderthals were considered as relevant. One of the focus points in such divagations is the issue of raw materials economy as undertaken by Neanderthals. The long-distance transport of knappable minerals (as a basis for the stone tools production) allows an insight into the economy and understanding of the size of land in use by Neanderthals group. Addressing this particular issue from the perspective of the Western Carpathian Mountains allows us to track the trails of mobility or trace possible contact zones between groups, and also to state, that at least in some circumstances Neanderthal groups were infiltrating and possibly crossing this highly elevated area on the S-N axis.

Ensuring access to a stable supply of a number of raw materials has become a serious challenge for domestic and regional economies with limited production, the EU economy alike. Reliable and unconstrained access to certain raw materials is an ever more serious concern. In order to tackle this challenge, the European Commission has established a list of Critical Raw Materials (CRMs) for the EU, which is regularly reviewed and updated. In its Communication COM(217) 490 final of September 13, 2017, the European Commission presented an updated list of 27 critical raw materials for the EU as a result of a third assessment based on a refined methodology developed by the Commission. Economic Importance (EI) and Supply Risk (SR) have remained the two main parameters to determine the criticality of a given raw material. The list of critical raw materials for the EU includes raw materials that reach or exceed the thresholds for both parameters set by the European Commission. The only exception is coking coal (included in the list of critical raw materials for the first time in 2014) which, although not reaching the economic importance threshold, has been conditionally kept on the 2017 list for the sake of caution. Should it not fully meet this criterion, it will be withdrawn from the list during the next assessment.

The article discusses the most important changes to the methodology used in the third review and their impacts on the coking coal criticality assessment. It presents the geographical structure of coking coal global production and consumption as well as the degree to which the EU is reliant on coking coal imports. Raw materials, even if not classified as critical raw materials, are essential for the European economy as they are at the beginning of manufacturing value chains. Their availability may change rapidly due to developments in trade flows or trade policy, which reveals the general need for the diversification of supply.