Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 5-5
Robert Peele, John Adams Church. Table 4. Length of Bar Stock Required to Form Shank and Bit of Drill Steels Length of stock for forging shank , in Section : hollow and solid hex , 31/4 ′′ 41/4 " Stoper Piston - drill steel round , oct ...
Robert Peele, John Adams Church. Table 4. Length of Bar Stock Required to Form Shank and Bit of Drill Steels Length of stock for forging shank , in Section : hollow and solid hex , 31/4 ′′ 41/4 " Stoper Piston - drill steel round , oct ...
Halaman 9-30
... length separately , or in stands of 3 or 4 lengths , as stacked in the derrick . Accuracy requires corrections : ( a ) for the slight bending of pipe lengths as they stand off the vertical ; ( b ) for expansion due to increase in temp ...
... length separately , or in stands of 3 or 4 lengths , as stacked in the derrick . Accuracy requires corrections : ( a ) for the slight bending of pipe lengths as they stand off the vertical ; ( b ) for expansion due to increase in temp ...
Halaman 10-14
... Length ; S3 , S4 , Erosion Revealing Medial Sections , with Depth Approx Half the Length ; S5 , Roots of Vein , Length Greatly restricted to one of several equally ex- posed formations indicates the latter are unfavorable . Most ...
... Length ; S3 , S4 , Erosion Revealing Medial Sections , with Depth Approx Half the Length ; S5 , Roots of Vein , Length Greatly restricted to one of several equally ex- posed formations indicates the latter are unfavorable . Most ...
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