"The Midwest Mine has no recorded production despite considerable underground development."[3]
This vein was discovered by N. C. Creede and Charles Nelson in 1891 before Creede found the famous Amethyst vein. Creede gave up his Nelson Mountain holdings in favor of the rich Amethyst. In the winter of 1892, however, a Mr. Palmer found a rich pocket of ore at point 1 on the enclosed map. He shipped a carload of high grade lead sulfate ore which was reported to con-tain 1.5 oz. of gold and 28 oz. of silver. In order to better develop the vein, the Nause tunnel was driven at point. The vein at this level is well defined, eight to eighteen feet wide with considerable barite but little values. This, however, encouraged driving another tunnel farther down the hill at point 3. Financial difficulties stopped this work several hundred feet short of the vein.
In 1913 Elwood M. Neff became interested in the property. He decided to attack the vein where it outcropped in Nelson Creek, thus minimizing the expensive crosscutting. An old tunnel, at point 4, crossed the strike of the vein in the wash and did not discover it. Mr. Neff opened the vein with tunnel 5 and in 1921 discovered sulfide ore but not in commercial quantities. In 1924 he leased to the Midwest Mining Company and the Colewood Tunnel, later called the Midwest, was driven at point 6. This tunnel cut the vein at 166 feet and followed it for 909 feet. Ore in small quantities was found all along this vein contained galena, sphalerite, chalcopyrite and anglesite. The vein is from five to fifteen feet wide with the breast assaying 2% lead and 2 oz silver. Rich pockets along the vein, however, showed 20% lead, 12 oz. in silver and small amounts of zinc, copper and gold.[2]
It's believed the adit of the Midwest Mine was started atleast by 1911. Also known as the Colewood Tunnel, it was driven about 60 to 90 feet from 1920 to 1926, and the portal was by the site of the present-day ventilation shaft. For most of the 20s, the tunnel was owned by Elwood and Pearl Neff. The Midwest Mining Company, a company from Illinois, took over the Colewood Tunnel, and worked it the tunnel for more than 1,000'. Before they went out of business in 1929 they left about 5,000 tons of tailings and had driven the tunnel to be 1,100' long.
By 1941, the mine was part of the Gateway claims, which was staked by E.J. Dabney and John Van Buskirk. During 1945 to 1958, the mine was ownedby and operated by John Van Buskirk, Verne Miller, and Emmett Dabney. In 1950, an ore zone of 60' above the tunnel on a 70 degree incline, and 700' feet from the portal, was stoped. The ore wasn't mined. The soft gouge vein was continually caved and removed. It's reported that 50 tons of this material, the most mineralized rock extracted from the mine, was burried in the tailings between the ventilation shaft and the outhouse.
From 1958 to 1968, John JAckson owned and operated the mine. In '68, two employees attempted to reopen the mine, and found the New Midwest Mining Company, aka Gateway Access Corporation. During 1969, they did some exploratory mining and drove 176' crosscut from the main 1,750' tunnel. In 1970, exploration continued for another 1,000'. A rig was set up to drill 750' long angled hole from the surface to test the vein 300' below the surface, which revealed soft vein material that was difficult to recover. Another drill hole, 1,000' deep, hit a breccia zone cemented with galena and sphalerite. During the exploration, core was extracted by Houston Oil and Minerals, CF&I, and Minerals Engineering Company. By 1972, a new adit with rails was driven by the Gateway Access Corporation for about 2,500' and paralled the vein of the old adit for about 1,200' with two crosscuts drivent to intersect and test the vein. A lot of the waste rock from the new adit was used by the county as road fill material.
In the late '70s, Houston Oil and Minerals did some further drilling about half a mile north of the portal. Between the late '70s and 1998, Sutton Resources and Homestake Mining did assment work at the site. By 1982, geophysics and drilling confirmed vein extensions and discovered additional, previously unknown veins. Sometime before the company disolved 1998, Japhne and Company of Denver owned the Gateway claims, including the mine.[3]
The main adit on the claim is the newer (1960s) Midwest Tunnel. The Midwest Tunnel was punched in to intercept just below the rich lodes that had been discovered in the early 1900s. Another miner had tried to clear the original workings in 1945, but was unsuccessful. These old workings are on the claim, but are collapsed but not from natural means. The Midwest was sunk to intercept these rich workings. And intercept they did, the records show the hit dead on the lode and worked samples out of some of the old workings. This is the primary adit of interest on the claim with a reported large steel bulkhead that kept intruders out since 1970s. The adit is backfilled with an estimated 15ft of dirt in front of the bulkhead. It would take very little work to reopen the mine. A few guys with shovels and a wheelbarrow could accomplish it. GRE is available to open the entrance for the new claim owner at a greatly discounted rate. Please inquire if you would like to make use of this service.
The historic sign denotes a minimum of 2500 ft. of workings, but historical documents indicate it is closer to 8000 ft. The mine was noted for silver deposits but also for significant gold in veins and faults. The claim owner should expect multiple levels, interconnected with winzes and many, many stopes.
There are some samples of pure native silver and stringer gold from the Midwest Mine at a rock shop in Denver. These were collected in 1968 by Colorado Fuel and Iron Corp. The site is on the historic loop road and anyone working the site should expect some tourist traffic.