The copper era., 1911-01-13
This Territory Holds the Re cord for Production of
 Copper for Year 1910.
U,S. PRODUCTION DECREASES
Output for the Year 1910 Was Exceeded Only in
 the Yerr 1909.


 states with an output slightly above the production of 1909, which was 2S1, ,l1O, ,29S pounds. The Bisbee dis trict was the largest producer, with an output of approximately 145, ,0O0,- GOO pounds, as compared with about 130, ,OOO, ,OOO pounds for 1909. EDevelopments during the year in the old mines of the district were en- couraging, especially in the deeper workings. Steps were taken late in the year to consolidate the Calumet and Arizona and Superior and Pitts burg companies
 The output of the Morenci-Metcalf district for 1910 will show little change from the production of 72,- OOO, 900 pounds in 1909. The shannon railroad, connecting this company's mines at Metcalf with it's mill and smelter at Clifton, was completed and put in operation early in the year.
 The Globe district made an output of about 27,OOO,OOO pounds as con- pared with about 33,OOO,OOO pounds for 1909.
 In the Miami section of this district there was great activity throughout the year in development and icon- struction. The Miami Copper com pany practically completed it's mill and will begin production ,early in 1911. The concentrates will be smelt- ed at Cananea, Mexico.
 Considerable ore was added to the reserves in blocking out the ore for extraction, though little effort was made during the year to increase the developed ore.
 The Inspiration Copper company was actively engaged in development during the year and it is reported as having on October 20 developed ore amounting to 12,396, OoO tons, and B. GOA. 900 tons of partially developed ore averaging per cent copper. An ex- perimental mill was operated by the company during latter part of the year to determine the best method of treating the ores.
 The Live Oak, Black Warrior and other mines of the district have been active in developing ore during the year.
 At Jerome the United Verde mine was operated throughout the year and the output will probably show but little variation from the 36,7OO,- 900 pounds produced in 1909.
 PRODUCTION OF COPPER IN 1910.
 Statistics and estimates received by the United States Geological Survey from all plants known to produce blister copper from domestic ores and from all Lake mines indicate that the copper output from mines in the United States in 1910 will fall consid- erably below the output of 1909 but will exceed the production of any previous year.
 SHELTER PRODUCTION.
 The figures showing smelter pro- duction, which havei been collected by B. S. Butler, of the Survey, repre- sent the actual production of each company for eleven months and in- clude an estimate of it's December output. The November figures for few companies were not available and these companies furnished esti- mates for the last two months of the year. According to the statistics and estimates received, the output of blister and Lake copper was 1,O79,- O00,000 pounds, as against l 1,O92, ,95l, 624 pounds in 1909
 REFINED COPPER.
 Statistics showing the output of re- fined copper byI plants in the United States are not collected completely by Geological Survey at this time. Fig ures published by the Copper Pro- ducers' Association for the first eleven months of 1910 indicate that the pro- duction of marketable copper by the regular refining plants from all sour ces, domestic and foreign, will amount to about LAS, 100000 pounds, as against 1,4O5, ,619,519 pounds in 1909.
 IMPORTS.
 According to the bureau of statis- tics, imports of pigs, bars, ingots, plates and old copper for the first eleven months amounted to 255, ,237,- 942 pounds, and the copper content of ore, matte, and regulus imported amounted to 75, TIP pounds If the imports for December were equal to the average monthly import for the first eleven months the amount of copper entering the United States for the year was about 33S. .OOO, 900 pounds, as against 321, ,8O1, IA pounds in 1909
 EXPORTS.
 Estimates based on figures for the first eleven months, published by the bureau of statistics and also by the Copper Producers Association, indi- cate that the exports of copper will exceed the exports for 1909, which amounted to 682 ,846, 726 pounds, and that they may be as much as 700, ,OOO,- GOO ponnds.
 STOCKS.
 Stocks of refined copper held in the