Fine aggregates produced from oil shale mining waste rock for backfilling the mined areas

Tohver, T. Fine aggregates produced from oil shale mining waste rock for backfilling the mined areas // Проблемы недропользования / Санкт-Петербургский Государственный Горный Институт (2010) 189, 1, с. 104-106. https://www.researchgate.net/publication/235941653_Fine_aggregates_produced_from_oil_shale_mining_waste_rock_for_backfilling_the_mined_areas