7 North of Bulkley river the Silver Standard mine is now the only large producer in the silver-lead group, but the American Boy is again opening and will ship this year. The ore in both these properties is in fissure veins in tuffaceous sediments and neither property is near the contact of a large intrusive. The veins are characterized by galena, sphalerite, and tetra- hedrite in a siliceous gangue. The tetrahedrite approaches freibergite in composition, for it carries over 2,000 ounces of silver in some places and is in sufficient amount to bring up the general silver values of the ore to a noteworthy extent. The ore on these properties occurs in distinct shoots and the high grade material is associated with so much lower grade, or milling ore, that a custom mill has been erected by the Silver Standard. The output can thus be greatly increased from the Silver Standard mine and, by treating the ore from the American Boy, that property also will become a producer, since the high grade ore from the American Boy is not sufficiently bunched to permit of separate mining. Near the contacts of the igneous stocks of Ninemile and Fourmile mountains the silver-lead deposits are characterized by a considerable percentage of jamesonite in addition to the minerals present in the two properties described above. None of the numerous properties in this class is at present producing, but some of them could become so if they had suitable milling facilities. The properties of Ninemile show much more promise than any seen on Fourmile mountain. The former have strong veins which can be traced for considerable distances along the surface, and which have very promising showings, with good silver values. The Shegunia river, at the base of the mountain, is about a mile distant from the properties and would afford a good site for a mill and for the develop- ment of more than the necessary water-power forthe mines. An alternative plan would be to take the ore by erial tram 6 miles south to a mill-site on Bulkley river, right at the railway. MINING PROPERTIES SOUTH OF BULKLEY RIVER. Properties in Juniper Creek Basin, Rocher Déboulé Mountains. ROCHER DE BOULE MINE. General Statement. The Rocher De Boule mine is the most important producer in the northeastern mineral survey district of British Columbia. It has been shipping since April, 1915, has installed a good plant and transportation system, and has paid off all liabilities besides making considerable returns on the investment. The development work consists of more than 2 miles of main crosscuts and drifts, 2,200 feet of raises, and 330 feet of winzes. The production to date has been 5,800,000 pounds of copper, 51,340 ounces of silver, and 3,736 ounces of gold. About 90 per cent of the copper was taken from high grade shoots above the 500-foot level on No. 4 vein, the highest, and the remainder from a high grade shoot on No. 2 vein between the 1,000-foot and 1,200-foot levels, which is still being worked. In opening up the high grade ore much second grade or milling ore was encountered and the company intends to install a mill to handle this product, the returns from which are expected to carry the cost of further search for high grade shoots.