Show rill ILI L attention A attention 0 mine and mill owners WANTED three dorr thickener mechanisms complete in good condition for six foot tanks ALSO other mine and mill equipment in good used condition no junk wanted SUBMIT PRICES AND FULL DETAILS J W reno co T mills san francisco T purchasing department rill III the he oil 01 1 shale industry to date new 1921 new L A 40 page 7 in reprint from a series ot illustrated articles written for the salt lake mining review by J B jenson mining engineer and oil 2 shale S specialist p eci alist part 1 the practical aspect of oil bieling shale deposits part art 2 commercial aspect of oil shale industry of the western slope T part 3 mine equipment crushing and betor retorting ting of petroleum part A 4 american vs scotch processes retorts etc short description and illustrations of the principal designs per copy 2500 per sent to an any y address upon n receipt of price AW gill all ir |