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lJ 1 1 1 1 !_J MINIAG PLAB E%HIBIT D (Continued) Management with Dotsero Block, Inc. holding 10 mining claims in Sections 33 and 34, T. 4 S., R. 86 W., 6th P. M. The current soil conditions are outlined in the Soils and Vegetation (Exhibit I/J) part of this report. Mining on this property began in 1941 and has been continuous since that time. Pre-law workings are shown on Map Exhibit C. Those areas outside the affected and permitted lands are pre-law disturbances and will not be the operators responsibility to reclaim. Any pre-law areas within the affected lands will be reclaimed prior to final reclamation if they are.redistucbed. There are no permanent man-made structures located within the affected lands. There are several roads across and in the affected lands. These roads are prelaw and are used by the B.L. M. for purposes other than mining (See Map Exhibit C). Geological Setting The volcanic cinder material being mined is from a layer of cinder associated with a volcanic vent located on a geologic feature known as the Dotsero Crater. USGS Bulletin 1142-J indicates the cinder material is associated with a possible volcano located on Willow Peak 8 miles west of the site. The text indicates the Dotsero Crater was really a vent for a this volcano and the material vented from this cone was spread over a large area surrounding the cone. Lava flowed from this vent down a narrow valley, south, towards the Eagle River. Under lying the site is the Maroon Formation, a predominantly red colored even bedded, shale, siltstone, sandstone and conglomerate. The Maroon formation is of no value to Dotsero Block, Inc. and will become the floor of the mine once complete. Overburden varies from 0 feet to over 40 feet plus (see Figure 1). The overburden is a cinder material that has no cohesive properties and is un-suitable for the manufacture of block. This material is sold to the County and State Highway departments for 7