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51 (LI) — 1940-1941
Barium in Coal, 162.
Barometer and Scale, 157.
Base Line Measurements, 262.
Bearing Lubrication, 275.
Belgium, Sheathed Explosives, 209.
Belts, Safety, 251.
Belts, Shafts and, 278.
Benzole, 9, 24.
Bernouilli's Theorem, 136.
Birmingham Students' Exhibit, 261.
Bits, Coal-cutter, 243.
Blasting, Cushioning, 354.
Boiler Cleaning, 14.
Boiler Shell Thickness, 56, 216.
Boiler Troubles, 37.
Boilers, New, 400.
Book Reviews, 23, 39, 58, 165, 227, 280.
Borneo (North) Coal, 228.
Boys and Accidents, 18, 53, 65, 235, 407.
Brake H.P., 264.
Breaking Coal, 279.
Brickwork Dams, 239.
Building in Subsidence Areas, 358.
Bumps, Inspector's Comments, 388.
Bureau, U.S., and Safety, 5.
By-products from Coal, 8.
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