Engineering and Mining Journal, Volume 90

American amount average building capacity carried cars cent charge claims close coal coke Company completed concentrates connected construction containing continue copper cost COUNTY deposits district drill dust electric engineer equipment follows four furnace give given gold grade ground Hill illus important increase installed interest iron July June Lake lead less London lower machine manager material ment metal method Mexico miles mill miners mines months opened operation pany passed plant practically present production recently reported river rock sample screen shaft shipments shipped shows side silver smelting South steam steel stope supply surface taken tests tion tons tunnel United vein week West York zinc