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Mine workings. The Virginius Shaft was begun around 1878 at the vein intersection and was <br />extended downward to the 1, 2 and 3 levels. Each level was 100 feet below the previous level. A <br />mill was constructed at this location and work continued downward to the 10 level in 1890. Hoisting <br />and pumping costs continued to rise, so a decision was made to develop a lower access to the vein. <br />Apparently, ground water from fractures was entering the workings which started to affect the mine <br />economics. This was the start of the Revenue Tunnel. The Tunnel was started at an elevation of <br />10,670 feet and was driven 7600 feet to intersect the Virginius Vein at 10,750 feet. The Tunnel was <br />purposely driven slightly uphill so water would freely drain from it. The Virginius shaft was <br />extended down to the 14 level and a raise was driven from the Revenue Tunnel upward <br />approximately 600 feet to intersect with the Virginius workings. The connection was made in 1893. <br />The inert waste rock from the driving of the tunnel was placed out of the Revenue portal area and is <br />still there today. When the connection was made, the water from the Virginius Mine now entered the <br />Revenue Tunnel and exited to the Revenue portal area. <br />Exact maps of the Virginius workings are unavailable but it is known that most of the workings are <br />located above the Revenue Drift extension southeast of the Virginius #1 shaft. The Virginius #2 <br />shaft was driven from the Revenue Drift extension below to access silver in the Virginius vein in <br />this area. This shaft was driven to 350 feet below the Revenue level. <br />The Revenue Drift extension was continued to the southeast until the Montana Vein was intersected <br />and connections were made to the Montana Mine workings. See Map C -5 for the location of this <br />area. The Montana vein (primarily rich in gold) was also mined from the Revenue and ore was <br />brought out to the Revenue Mill from these workings. The Montana Mine connects to a number of <br />other prolific mines in the Montana Vein, which were consolidated by Idarado Mining Company. <br />Once this connection was made, much of the water from the upper old workings of the Virginius <br />Mine entered this southeast extension and entered the Montana Mine. The Montana vein was mined <br />over an extensive area covering many mines and the extent of these workings are unknown. <br />The main Monogahela extensions and stopes to the northwest of Virginius Shaft #1 are in the <br />Virginius Vein and it is these workings that currently produce water from fractures that currently <br />exits the Revenue Tunnel. The recent water quality analysis (UG -4) shows that this water is of <br />Revenue Mine August 2012 G -4 <br />