56 The development at the Dunwell mine is extensive and is practically all underground. The vein has been entered by four adits driven into the mountainside at different elevations. No. 1 adit is a drift 180 feet long. No. 2 adit, 190 feet below and 300 feet west of No. 1 adit, is a crosscut for 280 feet and then enters the Dunwell vein on which about 400 feet of drifting had been done. Two raises have been driven along the dip of the vein to No. 1 adit. No. 3 adit, 160 feet below and 300 feet southwest of No. 2 adit, is a crosscut for 440 feet to where it enters the Dunwell vein. About 1,000 feet of drifting has been done on this level. The ore-shoot between adits Nos. 2 and 3 has been largely stoped out. A sublevel about 350 feet long exists 100 feet below No. 3 adit. The ore- shoot has been largely stoped out between No. 3 adit and the sublevel. No. 4 adit, 200 feet below and 750 feet southwest of No. 3 adit, is a crosscut for 900 feet to where it enters the Dunwell vein. About 400 feet of drifting has been done on this level. Raises have been driven along the vein to the sublevel and most of the ore has been stoped. A winze has been sunk on the vein for a short distance below No. 4 adit and diamond drill holes have been bored crosscutting the vein 100 feet below the adit. The top terminal of the aerial tramway is at the portal of No. 4 adit. All the ore mined is taken out of the mine through No. 4 adit and from there sent down on the aerial tramway to the mill. The mill feed is the ore as mined and carries lead, zinc, silver, and gold. The chief mill products are: galena concentrates containing lead, silver, and gold; and sphalerite concentrates containing zinc, silver, and gold. Two hundred tons of run of mine ore shipped in 1926, prior to the erection of the mill, assayed 0-6 ounce gold, 24 ounces of silver, 19 per cent lead, and 16 per cent zinc. The grade of this shipment was better than the average of the ore mined. GEORGE E CLAIM The George E claim adjoins the property of the Dunwell Mining Company, Limited, on the south, and the Glacier Creek Mining Company’s claims on the north. The country rock is argillite of the Bitter Creek formation. - Most of the development work was done many years ago by the Stewart Mining and Development Company and consists chiefly of under- ground work on several parallel quartz veins. The veins strike north and dip westward at moderate angles. East of Fault A creek an adit driven southeastward crosscuts three of the veins know as the First, Central, and Green veins (Nos. 18, 19, and 21, of Figure 12), 40, 140, and 300 feet from the portal. Drifts have been driven on all three of the veins. The First vein is 2 to 3 feet wide and contains a little pyrite, galena, and sphalerite in a quartz gangue. The Central vein is 3 to 6 feet wide and consists of quartz with sparse sulphide mineralization. The Green vein is 10 to 30 feet wide and consists of quartz and calcite with practically no sulphide. The Green vein contains small bunches an inch or two across of green chlorite included in quartz, and this probably accounts for the name “Green” vein.