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The entire upper surface of volume is divided by transit and tape into 10- to 100 - ft squares ( or rectangles ) ; elevations to nearest tenth are taken at all corners of squares , and at as many intermediate points as necessary ...
( c ) Boat may be rowed on a range line , or not , while its position is located by angles taken simultaneously by two transits on shore , or by angles taken simultaneously to shore stations from boat by two sextants .
With such ores , washers should be discarded and more time taken to grind the pieces of metal . Oversize from the sieve is either reground or reduced on the bucking board ( Sec 30 , Art 1 ) . Quality of iron in bucking board and hammer ...
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LibraryThing ReviewUlasan Pengguna - wackyvorlon - LibraryThing
I only have the second volume of this work, and I love it! Found at a local Value Village, it is filled with fascinating information. Details of all aspects of mine engineering, including compressed air, ventilation, and supporting structures. Baca ulasan lengkap
Conditions Methods in General
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