. Transactions. iron are nailed with the flat side tangent to the bucketat point of contact. Near the point of dumping two outside skids are placed a littlefarther apart than the diameter of the bucket, and take the place of theother skids. These catch the lugs on the bucket and straighten it the point of dumping two depressions are made in the skids and thebucket is only hoisted high enough for the lugs to catch in the depres-sions. The engine is reversed, lowering the top of the bucket, whichfalls backward and dumps. The bucket is then hoisted a foot or so Mining in the Rossland Distri
. Transactions. iron are nailed with the flat side tangent to the bucketat point of contact. Near the point of dumping two outside skids are placed a littlefarther apart than the diameter of the bucket, and take the place of theother skids. These catch the lugs on the bucket and straighten it the point of dumping two depressions are made in the skids and thebucket is only hoisted high enough for the lugs to catch in the depres-sions. The engine is reversed, lowering the top of the bucket, whichfalls backward and dumps. The bucket is then hoisted a foot or so Mining in the Rossland District. 457 above the depressions, and is lowered, the lugs catching on swingingirons which swing forward by the weight of the bucket, carrying thelugs over the depression. The bucket is then lowered to the bottomand refilled. The plan of the 600 level shows the position of the hoistand the shaft. The bucket is dumped backward into a car standingon the track behind the shaft. Two burket loads fill the car, which is. War KukU Tram. MduaKers kcsiilt-iice. Offices. Rest-rvoir. Offices War Eagle and Centre Star. then wheeled around to the front of the shaft, and the contents dumpedinto a skip. The old rock bulkhead method has been abandoned in favor ofthe timber bulkhead. 15y this method the timbering goes on contem-poraneously with the sinking, sufficient space being left to keep thelowest set from being iiijtired by the heavy blasts. This clearance isusually 20 to 23 feet. The shaft sets are of sawed pine, framed on the surface, and areplaced 5 ft. apart, being separated by posts. The way in which the 458 The Canadian Mininj^ Institute. different parts fit together is shown in the timber drawings. Hangersare employed to support the sets as the work progresses, the postsserving to keep the sets properly spaced, while the hangers keep thesets tight against the posts. They are not left on permanently, but areremoved after several sets have been completed and properly wedged
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Keywords: ., book, bookcentury1800, booksubjectmineralindustries, bookyear1895
