. Products of an advanced civilization. A Kansas souvenir. A book of information relative to the moral, educational, agricultural, commercial, manufacturing and mining interests of the state. Issued by the Kansas immigration and information association . ch, a steam hoister is erected, capable of hoisting one hundred tons per day. When ore is discov-ered, the shaft is sunk down into it until a sufficient face is opened up — fifteen to twenty feet being a good face. Then a drift is started. At firstthe drift is narrow, but is widened eight to ten feet from the shaft, so as to permit four to six
. Products of an advanced civilization. A Kansas souvenir. A book of information relative to the moral, educational, agricultural, commercial, manufacturing and mining interests of the state. Issued by the Kansas immigration and information association . ch, a steam hoister is erected, capable of hoisting one hundred tons per day. When ore is discov-ered, the shaft is sunk down into it until a sufficient face is opened up — fifteen to twenty feet being a good face. Then a drift is started. At firstthe drift is narrow, but is widened eight to ten feet from the shaft, so as to permit four to six men to work in the face, as shown in the picture of the•Galena Mining Camp. The tools used are steel drills one and one-fourth to one and one-half inches in diameter, and running from eighteen inches tosix feet long; hammer, weighing six to eight pounds; and spoons and sand-pumps, to clean out the drill-holes. When a hole is the necessary depth,it is filled with dynamite cartridges, and fired, either with a fuse and cap or with an electric battery. The ore is then put in tubs, run on little ears to?the shaft, hoisted to the surface, and then cleaned. There are two ways of cleaning ore, both based on the same principle. One is known as (99). MINING PLANT. STEAM CRUSHING FOB CLEANING ORE. INTERIOR OF MINE. LEAD AND ZtNC MINING CAMP, GALENA. (100) hand-jig, and the other steam-jig cleaning. A hand-jig is a water-tiglit tank, 5 feet wide, 6 feet long, and 2}^ feet high, in the center of?nhich is a sieve-bottomed box 4K fpet lonK. 2 feet wide, and 0 to 12 inches deep. This is hnng to one end of the jig-pole so that it works np and•down in the water-tank. The operator takes the other end of the pole and shakes the jig-box containing the ore up and down in the water, therebysettling the lead to the bottom of the jig-box; the zinc, being lighter than lead, settles next, and the flint rises to the surface. In steam-jig cleaning,:all the rock containing ore is run
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