| OCR Text |
Show 171 area to produce vanadium. In this, the history and record of production prior to 1938 and the nature of the mineralization are Important considerations. The history and record of production of the Rifle mine prior to 1938 is significant in that (l) the mine had produced from 1925 through 1932 a total of about 9,000,000 pounds of V2O5 in the form of concentrates from an area a little over 3,000 feet long and up to 300 feet wide, (2) ore one to two feet thick was exposed in places in exploratory drifts extended east at the time the mine was closed, (3) the geologic conditions were favorable for extensions of ore on subject land along the trend of the known ore body, and (4) vanadium mineralization was known on the surface well to the east of the mine workings. The foregoing history and record were well known when the mine was closed in 1932 and indicated a probability that the ore body continued with a potential to produce a quantity of vanadium from subject land equal in amount to earlier production from the land owned by the United States Vanadium Corporation; the situation was the same on June 28, 1938. The ore developed on subject land since 1938 by extending the mine workings east along the known trend of the ore bc*ly Is in excess of the ore mined prior to 1932. The mine workings to date have shown continuous ore in an area about 7,200 feet In length and up to 600 feet in width covering an area of about 60 acres. Fully half of this over-all length (see PV-226 and pi. 37) is on subject land and was ^ouoinnfid since 1938, |
