Principles of Mining: Valuation, Organization and Administration
img img Principles of Mining: Valuation, Organization and Administration img Chapter 14 No.14
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Chapter 1 No.1
Chapter 2 No.2
Chapter 3 No.3
Chapter 4 No.4
Chapter 5 No.5
Chapter 6 No.6
Chapter 7 No.7
Chapter 8 No.8
Chapter 9 No.9
Chapter 10 No.10
Chapter 11 No.11
Chapter 12 No.12
Chapter 13 No.13
Chapter 14 No.14
Chapter 15 No.15
Chapter 16 No.16
Chapter 17 No.17
Chapter 18 No.18
Chapter 19 No.19
Chapter 20 No.20
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Chapter 14 No.14

Mechanical Equipment (Concluded).

MACHINE DRILLING: POWER TRANSMISSION; COMPRESSED AIR VS. ELECTRICITY; AIR DRILLS; MACHINE VS. HAND DRILLING. WORK-SHOPS. IMPROVEMENT IN EQUIPMENT.

For over two hundred years from the introduction of drill-holes for blasting by Caspar Weindel in Hungary, to the invention of the first practicable steam percussi

             
            

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