Experiments on multiple short-delay blasting of coal

Technical Report · Tue Jan 01 04:00:00 EST 1952

OSTI ID:7099846

Nagy, J; Hartmann, I; Christofel, F P; Seiler, E C

Investigation was made to determine conditions under which short-delay multiple blasting could be used in coal mines without causing ignition of gas, coal dust, or mixtures of gas and dust. Additional aims were to determine effects of blasting on mine roof; to find quantity and breakage of coal produced by multiple blasting; to measure amount of float dust formed during shooting; and to study relative time requirement in different blasting procedures. Various recommendations that should help greatly to reduce incidence of misfires are presented. Paper presented at Seventh International Conference of Directors of Safety in Mines Research at the Safety in Mines Research Establishment, Ministry of Fuel and Power, Buxton, England, July 7-12, 1952.

• Research Organization: Bureau of Mines, Washington, DC (USA)
• OSTI ID: 7099846
• Report Number(s): BM-RI-4875
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
016000 -- Coal
Lignite
& Peat-- Health & Safety
CARBONACEOUS MATERIALS
COAL
COAL FINES
COAL GAS
COAL MINES
COAL MINING
DUSTS
ENERGY SOURCES
EXPLOSIONS
FLUIDS
FOSSIL FUELS
FUELS
GASES
HAZARDS
IGNITION
MINES
MINING
ROOFS
SAFETY
UNDERGROUND MINING