The Bridgeport evening farmer., 1917-07-19
MINES OF INCAS
 AGAIN PRODUCE
 TONS OF COPPER
War Demands Cause Activ ity in Once Abandon
 doned Mines

The United States, lsWitn iSS icA 5o output of copper from Anaconda, utan Copper, the lake region. Nevada. con solidated and Kennecot in Alaska- to mention but few of many importalne areas in which this great industry thrfves throughout the West-is the largest producer of copper in the world, but now that the exigencles or vast amounts of war material are aoo- ed to the mu1tifarious uses to wnicn copper is already put. every pound that can be speedily produced VIII pc needed for this additional demand
 Chile, hardly more than century ago the worlds largest copper produ- cer, Is again forging rapidly to the front in this important industry through the wonderfully successful de- velopment of the extensive Braden cooper area and the Chile Copper Company's great mines. the largest proven copper deposits in the world. Both of these remarkable properties are developed. owned, and worked py American capital and American engi- neers-
 Not only is the Chile. Copper Com panys g deposit the premier of the world in importance, long life ana productive capacity but 1t is in many respects the most interesting: In the same area on the great Chuquicamata, plateau of the Chilean Andes, are found mineral bearing veins and huge blanket formations of disseminated copper ore thousands of acres In ex- tent This condition is unusual 1n copper mining
 Centuries ago the Incas workeo these veins in pits and shallow cham bers cut Into the mountain side. Their Hpanfsh aRxcceagors. and the Chilean and English companies who in turn followed them, still mined the veins, and although the extracted ore their methods were crude and their work commercially unpfofltaple.
 In 4e42-the- GugEcnhems sent tnelr engineers to the field. Later the Chile Exploration Company was formed and the aa1axe Blanket deposit of Chuquica- mata proved up by hundreds of test holes which took many months to drill and cost over s1.o0o. 900.
 In a quiet office in the great Equit- able Building, New York. is table twenty By fave feet in surface area. On 1t stand tall glass tubes about a quar- ter in in diameter, which remind one of grandmother's knitting needles, only they are longer and stripped in various coforsl Each needle" repre- sents a Chuquicamata test hole leach color the depth, extent and mineral ization shown by actual drilling re- suits.
 This replica of the test hole met 7 made to accurate scale. Is evidence of the triumph of exact mining science over guess work 1t proves the exist ence of $50. 900, ,000 tons of ore .in sight, and the indicated presence o1 100000, 900 tonsenough to last 200 years at the current rate of handling 10000 tons daily at the company's great reduction plant.
 The Chile Copper Company has spent many millions in opening ths great Chuquicamata mines, building railroad spurs. piping water 37 miles to the property, installing a giani electrolytic treatment plant and ar s4-mile power transmission system from TocopilIa on, the Pacific to tho reduction works At the head of thu arid nitrate desert. 10000 feet above the sea. the company has built cit, to house 1t operatives, which nov has over 5000 inhabitants. Of thes' approximately 1000 are American ant European. The new city has schools theatres, churches and clubs. Ths company owns steamships which pl, between Valparaiso and American ports and has under charter severa other vessels which it operates in th' ore trade. The reduction plant i now being increased to 27,000 ton ] daily capacity and Chile Copper Com ,pany is one of the largest and mos important manufacturing enterprise in the wor1d--its output being the pre-