Show METAL MINING IN COLORADO 1927 VALUE OF COLORADOS METAL production gold silver copper lead zinc total value the output of gold silver lead copper and zinc from colorado mines in 1927 in terms of recovered and estimated recoverable metal was fine ounces of gold ounces of silver pounds of lead pounds of copper and pounds of zinc according to charles na W henderson of the united states bureau of mines these figures are to be compared with fine ounces of gold ounces of silver pounds of lead pounds of copper and pounds of zinc zinc in in 1926 compared with the 1926 figures gold shows a decrease of ounces or silver a decrease of ounces lead an increase of pounds copper an increase of pounds and zinc an increase of pounds the gross estimated value of the output of metal in chloi colorado ado in 1927 is gold silver lead copper zinc 2087 or a total of compared with in 1926 the cripple creek district in 1927 produced in gold as compared with in 1926 this decrease can be credited to the fact that the grade of ore shipped from the cresson mine in 1927 was considerably under the average for 1926 and the quantity of what is called higher grade ores shipped from the portland mine was very much less than in 1926 the portland independence 1200 ton non roast cyanide tion ration mill was operated continuously on the lower grade ore from filling reject from the picking belts ond nd dump material production was steady from the various properties of the united gold mines company A broken rod on oil the cresson hoist prevented shipping for three weeks in november and a fire in december which completely destroyed the vindicator surface buildings also contributed to the decrease the he stratton leasing company continued work on the orpha may and los angeles claims other producing mines were the elkton el paso forest queen granite midget queen and rose nicol ore continued to be produced from the plutocrat claim a new ew strike in 1926 on the north slope of mineral hill empire zinc mill operates steadily at canon city the empire zinc companas Comp anys magnetic separation and flotation mill was operated steadily throughout the year ear on zinc lead ore from stock and new ore from the com banys eagle mines at gilman no shipments were made from the eagle mines after october and it is probable that the mag cletic mill will be closed down the large blocked out ore bodies of zinc ore at the mine constitute a reserve for many years to come the empire zinc companas Comp anys zinc oxide plant also at canon citey ty was operated steadily on zinc concentrates from the compy s mine at hanover new mexico the river smelting smelling Sm elting refining fining companas Comp anys fuming arid and matting plant at florence was as idle at use ilse custer county the ton jigs and table concen mill at the terrible mine was operated up to october on the ores of this mine development at lower levels continued after october at westcliffe West cliffe the cross cuts from the bottom of the new shaft at the mine opened the vein at feet in depth the ton flotation mill at the rawley mine at bonanza was operated throughout the year producing lead copper silver gold concentrates which were shipped to leadville development work was continued at the Coco mongo mine an adit was run on the manganese vein of the express headlight and a car of ore was placed on the dump at aspen mining was reduced to about tons a day of lime ore from the upper part of the leadville limestone payment was made at the rate of 15 cents a unit for the lime this lime rock contained from 2 to 4 ounces of silver and from 2 to 4 per cent lead development work was continued at the midnight adit development work was also started at aspen in the cowenhoven adit to search for ores in the white or yule limestone the smuggler mill was idle all year forty mines operating at leadville at leadville the colorado zinc lead companas Comp anys flotation mill was operated steadily with a product of lead and zinc concentrate cen some of the zinc concentrate was exported the feed for this mill came chiefly from the mines of the leadville deep mines company in the carbonate hill graham park area the leadville deep mines company controls the greenback pyre nees mikado marion R A M Wolf tone robert emmett and other claims lessees lessels on the ibex and golden eagle mines continued to ship siliceous gold ores to the A V smelter at leadville to the golden cycle mill at colorado springs and occasionally specimen gold to the denver deliver mint the arkansas valley lead bul lion and leady copper matte smelter was operated continuously with only two furnaces in blast the western zinc oxide companas Comp anys oxide furnaces were idle all year raising and driving were continued at the canterbury drainage adit the last face being in the white yule limestone some iron manganese ore was shipped to the steel mill at pueblo in all about 40 mines were operated at leadville at climax or fremont pass the climax molybdenum companas Comp anys flotation mill was operated continuously at a rate ot of to tons a month this very large blocked out molybdenum deposit is being worked by the shrinkage method the ore is disseminated through what was a thoroughly shattered precambrian pre cambrian granite now so highly that no timbering is necessary at breckenridge some hydraulic king and sluicing of placer gold deposits were done and the blue river dredge was operated nearly the entire year the wellington mills one a jig and tab table I 1 e concen concentration t ration mill and the other a roast magnetic tion mill were operated through april when closed these were supplanted by a selective flotation mill which was set in successful operation in september but which was closed on december 1 I because of the decline in lead and zinc prices lead car bonate ore was shipped from the detroit mine at silver plume and other points at silver plume clear creek county the east butte flotation mill on the dives pel pelican ican zero group remained idle some development work was done at the santiago mine some development work was done at the west fork group at empire and the gold dirt flotation mill at empire yielded gold concentrates cen lessees lessels reopened the J jo 0 reynolds at lawson picked ore continued to be shipped in small quantity from idaho springs from the sylvanite mine of the west gold mines co from which a very creditable output was made in 1926 from surface down clown to 90 feet along a length of feet at the newhouse or argo drainage adit the mill at the mouth was remodeled in preparation for treatment of ores from the gunnell gunnel 1 and concrete groups from ore bodies below the adit level raising continued with long drills kept ahead on the vein of the kansas burroughs group in order to drain the water from the old workings the gilpin eureka mine and amalgamation mill at central city was operated part of the year there were shipments of gold ore and bullion from the perigo and providence mines near Rollins rollinsville Rol linsville vill in boulder county the fairview mining company operated its flotation mill at cardinal on ores from the boulder county mine and lessees lessels shipped silver ore from the caribou mine at caribou gold ore was shipped from the wano mine at jamestown to the golden cycle mill and an attempt was made to mill the silica ores of jamestown bullion was shipped from the wood mountain mine at sugar loaf the tungsten mill was destroyed by fire in august but was rebuilt at Summit summitville ville rio grande county from the little annie mine several cars of selected and sacked specimen gold ore contained approximately in gold in 1926 several lots of specimen gold and one car of smelting smelling sm elting ore from this mine carried in gold content the sunnyside Sunny side selective flotation mill was operated throughout the year at about the same capacity as in 1926 namely to tons a day at ophir producing mines were the carbonero and san bernardo at rico dolores county the international smelt ing companas Comp anys 25 ton selective flotation mill was closed in may M ay but was reopened in august and operated the rest of the year lead silver ore was shipped from the union carbonate mine at rico other properties at rico were the rico mining reduction company the falcon lead company and the rico argentine some very rich lots of gold silver ore were shipped from the gold king mine at la plata and from the may day mine at hesperus la plata county |