The Technical World Magazine, Volume 23 |
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Results 1-5 of 43
Page 24
PROFESSOR of geology in a Western university recently concluded a lecture on " Min- A eral Fuels " with this state- ment : " Thus you will see that , at the present rate of increase in their consumption , the coal and oil deposits of ...
PROFESSOR of geology in a Western university recently concluded a lecture on " Min- A eral Fuels " with this state- ment : " Thus you will see that , at the present rate of increase in their consumption , the coal and oil deposits of ...
Page 27
The fact that coal was abnormally high and the demand for power heavy in this greatest of the world's gold fields , led to the formation of the Victoria Falls VICTORIA'S BOILING POT It roughly corresponds to the Whirlpool Rapids of ...
The fact that coal was abnormally high and the demand for power heavy in this greatest of the world's gold fields , led to the formation of the Victoria Falls VICTORIA'S BOILING POT It roughly corresponds to the Whirlpool Rapids of ...
Page 50
APPROACHING A TUNNEL BY THE " LEGGING " METHOD ELECTRIC BARGES REPLACE " LEGGERS " SIXTEEN electric towing barges have taken jobs from the " leggers " who have pushed coal through the Harecastle tunnel in England for years .
APPROACHING A TUNNEL BY THE " LEGGING " METHOD ELECTRIC BARGES REPLACE " LEGGERS " SIXTEEN electric towing barges have taken jobs from the " leggers " who have pushed coal through the Harecastle tunnel in England for years .
Page 63
... alone the mining of coal and metals , and for railroad building . Motion pictures of the Panama Canal , and other construction work , have shown how , in a single charge , 10,000 or 20,000 pounds of dynamite have been exploded .
... alone the mining of coal and metals , and for railroad building . Motion pictures of the Panama Canal , and other construction work , have shown how , in a single charge , 10,000 or 20,000 pounds of dynamite have been exploded .
Page 64
... is a section . known as the Joplin district , where tre- mendous quantities of explosives are used in mining lead and zinc . In Franklin and Wil- liams Counties in Illi- nois , the coal mines . blast millions of pounds annually ...
... is a section . known as the Joplin district , where tre- mendous quantities of explosives are used in mining lead and zinc . In Franklin and Wil- liams Counties in Illi- nois , the coal mines . blast millions of pounds annually ...
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Contents
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