Information Circular1950 - Mines and mineral resources |
From inside the book
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... shaft was sunk on the vein from No. 4 adit to the 400 level . Stoped ore was hoisted up the shaft from the 100 , 200 , 300 , and 400 levels and trammed out the adit . Subsequently , the Surprise 700 level was extended and connected with ...
... shaft was sunk on the vein from No. 4 adit to the 400 level . Stoped ore was hoisted up the shaft from the 100 , 200 , 300 , and 400 levels and trammed out the adit . Subsequently , the Surprise 700 level was extended and connected with ...
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... shaft in the hanging wall of the vein ; it is 1,210 feet deep measured on the slope . The shaft has one compartment and a manway from the collar in No. 4 tunnel down to the 800 level . Below the 800 level the shaft contains two ...
... shaft in the hanging wall of the vein ; it is 1,210 feet deep measured on the slope . The shaft has one compartment and a manway from the collar in No. 4 tunnel down to the 800 level . Below the 800 level the shaft contains two ...
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... shaft is planned for the development of the ore body el . It is to be raised concurrently from several levels sunk below the 1,150 level , probably with the use of cking apparatus . stoper drills fitted with chucks for 1 - inch quarter ...
... shaft is planned for the development of the ore body el . It is to be raised concurrently from several levels sunk below the 1,150 level , probably with the use of cking apparatus . stoper drills fitted with chucks for 1 - inch quarter ...
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... shaft is planned for the development of the ore body below the 1,150 level . It is to be raised concurrently from several levels above the 1,150 and sunk below the 1,150 level , probably with the use of the Riddell shaft - mucking ...
... shaft is planned for the development of the ore body below the 1,150 level . It is to be raised concurrently from several levels above the 1,150 and sunk below the 1,150 level , probably with the use of the Riddell shaft - mucking ...
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... shaft , and dumped in shaft pockets . A 3 - ton skip is loaded from the pockets and hoisted to the collar , where it dumps automatically into a bin . Another electric locomotive with a train of cars hauls ore from the shaft bin to the ...
... shaft , and dumped in shaft pockets . A 3 - ton skip is loaded from the pockets and hoisted to the collar , where it dumps automatically into a bin . Another electric locomotive with a train of cars hauls ore from the shaft bin to the ...
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