Prof. Kecojevic said that in 2008, coal participated with 49.8% in the production of electricity in the United States, while gas participated with 20%, and renewables with 2.5%. In the next 10 years, the share of coal in electricity production has been constantly declining, so that in 2018 it amounted to 27.8%. However, the share of gas gradually grew, so in 2018 it amounted to 35.4%. The share of non-renewable sources also grew, so in 2018 it amounted to 10.3%. He stated that electricity is the cheapest in Argentina ($ 0.01 per 1 kWh), and the most expensive in Germany ($ 0.33 per 1 kWh). In the USA, the price of electricity is $ 0.13 per 1 kWh. During 2008, 1,063 million tons of coal (1,435 mines) were produced in the United States, while in 2018, 685 million tons (666 mines) were produced. In the last 10 years, 769 coal mines have been closed in the United States. Prof. Kecojevic said that coal mines in the United States are closing due to the availability of cheap natural gas, increasing the share of renewable energy and reducing the emission of harmful gases. In the end, he stated that US coal enables energy independence, because there are large amounts of reserves.
Stephen Frankland, B.Sc. eng. mining from Great Britain spoke about the technical assessment of the evaluation of coal mine projects, while Pavloudakis F. from Greece spoke about the economic and social assessment of the impact of decarbonization in the area of the coal mining basin Ptolemy in Greece. Prof. Pavel Ribar from the University of Košice in Slovakia spoke about mining tourism, as well as the conversion of mineral deposits for the needs of mining tourism.
During two working days, about 35 oral presentations of scientific and professional papers were held. In the accompanying program of the Conference, through presentations and presentations, several domestic and foreign manufacturers of equipment and software, hardware and technological solutions in the field of mining and geology took part.
Within the Conference, a Round Table was held with the topic Challenges of sustainable development of coal exploitation. The work of the Round Table was led by prof. Vladimir Pavlović, who gave a presentation at the very beginning. After the presentation, a large number of participants discussed.
In the end, all participants agreed that in relation to sustainable coal exploitation, there are a number of problems related to highly variable environmental, economic and social components that participants in the process would have to solve in a coordinated and joint effort, primarily through:
- - increasing efficiency at all levels,
- - achieving the growing competence of mining experts through the exchange of experiences, training and renewal of licenses,
- - raising the level of influence and activities of the Association of Mining and Geological Engineers of Serbia and other professional organizations on strategic economic decisions,
- - increased involvement in the media in order to inform the population about the importance of mineral resources and mining for the development of the country,
- - strategic changes in legislation in relation to the non-renewable resources of mineral resources, energy stability and independence, social and economic policy and environmental impact,
- - harmonization of criteria for sustainable electricity production, both for fossil primary energy sources and for renewable sources.
From this Conference, the Collection of Abstracts was printed, as well as the Collection of Papers on CD, in which 39 scientific and professional papers in the field of geology, mining, environmental protection and management, related to coal, were published.