Experiments on multiple short-delay blasting of coal (in two parts) : part II

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245 1 0 ‡aExperiments on multiple short-delay blasting of coal (in two parts) : ‡bpart II / ‡cby John Nagy, Irving Hartmann, F.P. Christofel, and E.C. Seiler.
260 ⊔ ⊔ ‡a[Washington, D.C.] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c1952.
300 ⊔ ⊔ ‡a22 p. : ‡bill. ; ‡c27 cm.
490 0 ⊔ ‡aReport of investigations / United States Department of the Interior, Bureau of Mines ; ‡v4875
500 ⊔ ⊔ ‡aSee also RI 4868.
500 ⊔ ⊔ ‡a"Paper presented at 7th 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.
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 0 ‡aMine explosions.
700 1 ⊔ ‡aSeiler, E. C.
700 1 ⊔ ‡aChristofel, F. P.
700 1 ⊔ ‡aHartmann, Irving, ‡c1905-
700 1 ⊔ ‡aNagy, John.
711 2 ⊔ ‡aInternational Conference of Directors of Mine Safety Research ‡n(7th : ‡d1952 : ‡cBuxton, England)
774 0 ⊔ ‡aHartmann, Irving, 1905- ‡tExperiments on multiple short-delay blasting of coal (in two parts). ‡dWashington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1952 ‡w(OCoLC)41079821
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