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Ch. 13: Obstacles and Perils

Ch. 13: Obstacles and Perils Page of 396 Ch. 13: Obstacles and Perils Text size:minus plus Restore normal size   Mail page  Print this page
28 THE DIAMOND MINES OF SOUTH AFRICA
Beers mine in July, 1888. When the Consolidated Mines took over the property of De Beers Mining Company, nearly all the blue ground was hoisted from the 500-foot level, through the first large working shaft constructed, known as No. 1 west end incline. In July, 1888, another shaft, No. 2 incline, had just been completed to the 700-foot level, and skips in the 7-foot compartment were used in hoisting the ground broken on this level. In addition to these working shafts a small vertical pros­pecting winze, called the Friggin's shaft, had been sunk from the 500-foot to the 700-foot level. When a tunnel connec­tion was opened between No. 1 and No. 2 inclines on the 700-foot level, the prospecting winze was no longer needed, and it stood abandoned except as a ladderway. There was a small disused engine room on the 500-foot level a short distance from the winze. With the sinking and connection of both working shafts on the 700-foot level, the output of the mine increased until a total of 104,089 loads was attained during the month of June, 1888.
On the 9th July following, large skips in No. 2 incline be­gan carrying blue ground from the 700-foot level, and continued hauling until the morning of the nth, when one of them jumped the rails, either because the hoisting was being done at too rapid a pace, or from some obstruction in the shaft. Examination showed that both skips were off the rails, and that the shaft timbers had been consider­ably damaged. In bringing up one of the small skips in the manway, this was also derailed by the debris in the shaft. The necessary work of repair was begun at once and continued during the day. During the changing of the shifts in the evening, the
Ch. 13: Obstacles and Perils Page of 396 Ch. 13: Obstacles and Perils
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