Call Number (LC) Title Results
I 28.27:7617 Domestic mica / 1
I 28.27:7618 Annual report of research and technologic work on coal : fiscal year 1950 / 1
I 28.27:7619 Significance of laboratory tests of coal and coke for combustion / 1
I 28.27:7620 Physiological aspects of electrical accidents in the coal-mining industry / 1
I 28.27:7621 Suggestions for inspection of roof-bolt installations / 1
I 28.27:7622 Analysis of haulage fatalities in coal mines : January-June 1951 / 1
I 28.27:7623 Safety in milling : Magma Copper Co., Superior, Ariz. / 1
I 28.27:7624 Minimizing fire hazards in coal mines by proper circuit-breaker protection of 250/275-volt direct-current systems / 1
I 28.27:7625 Federal coal-mine inspection : a decade of progress : annual report for fiscal year 1951 and 10-year review / 1
I 28.27:7626 Two-way radio communication at Santa Rita Open Pit, Kennecott Copper Corp., Santa Rita, N. Mex. / 1
I 28.27:7626-7650 Mechanical mining in some bituminous-coal mines : progress report. 1
I 28.27:7627 Control of metallurgical and mineral dusts and fumes in Los Angeles County, Calif. / 1
I 28.27:7628 Modern automatic electrically controlled elevators for transporting men at two coal mines in Western Pennsylvania / 1
I 28.27:7629 Truck haulage at an iron mine in the Adirondack Mountains, New York / 1
I 28.27:7630 A quarter century of fuel-oil sales : 1926-50 / 1
I 28.27:7631 Mechanical mining in some bituminous-coal mines : progress report. 1
I 28.27:7632 Hazard of firing open, unconfined shots in coal mines / 1
I 28.27:7633 Economic benefits of systematic roof bolting in Ziegler No. 3 Mine, Bell & Zoller Coal & Mining Co., Williamson County, Ill., / 1
I 28.27:7634 Production of manganese slags for manufacturing high-grade ferromanganese by blowing oxidation spiegeleisen / 1
I 28.27:7635 Utilization of fly ash / 1