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столбовая система разработки stresses
geol.	barrier method; longwall retreating; stoop system
Makarov.	pillar mining
mining.	North-Staffordshire method; block system; board-and-pillar method; board-and-pillar system; board-and-pillar; board-and-wall method; board-and-wall system; bord-and-pillar method; bord-and-pillar; bord-and-wall method; breast-and-pillar method; longwall; longwork; panel method; panel system; pillar method; pillar working; pillar-and-bord method; pillar-and-room method; pillar-and-room system; room-and-pillar method; room-and-pillar system; room-and-stoop; single-road stall method; single-road stall system; stall-and-brest method; stall-and-brest system; stoop method; stoop-and-room method; straight ends and walls; retreat longwall mining (alann)
tech.	barrier system; breast-and-pillar system; pillar system; pillar-and-bord system; stoop-and-room system

столбовая система разработки: 79 phrases in 5 subjects

Geology	2
Gold mining	2
Mining	68
Oil and gas	1
Technology	6