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RALSTON QUARRY ANNUAL REPORT Crushing Equipment: The changes made in our crushing operations during the winter of 1989 continue to result in benefits for both our operation and environment. The "chip spread" located west and north of the main crushing operation was eliminated entirely. There is no longer a separate chip production area requiring its own activities. As a result, there has been a significant reduction in fugitive dust, both from the crushing operation itself and from the front end loader traveling across the quarry floor feeding this crusher. Further, a portable generator (diesel engine powered) that ran the spread was eliminated as well. This move has improved air quality, eliminating stack emissions, etc. The chip production was incorporated into the main crushing plant. At the present time, there is only one crushing operation which produces all of the aggregate products we manufacture and use. The incorporation of the chip operation into the main plant was • facilitated by the purchase of a new impact crusher. The introduction of this piece of equipment into the spread has necessitated revamping and upgrading other parts of the operation. Existing conveyors have been realigned. New conveyors have been built. Cone crushers and screen decks have been repositioned to be more efficient and productive. Notwithstanding the above, there has been no change with regard to the primary crusher (Baxter Jaw) and associated feed hopper and ground conveyor. There has been, however, an addition to the feed process related to this primary jaw crusher. A 992C Caterpillar front end loader (12 cy machine) has been added to the operation. As the mining activity (drilling, shooting and extraction process) has moved further and further away (north) from the jaw, it has become necessary to increase the feeding capacity with a larger machine. As a result of adding this larger, newer machine we have also been able to eliminate an older, smaller one (988B Caterpillar). The net result is that we still have two front end loaders charging the feeder that feeds the jaw crusher. One 988B Caterpillar wheel loader continues to feed this primary crusher with material brought down from the higher benches by an 8K Caterpillar dozer. Security Fencin4, Roads, Pit Configuration: Asphalt Paving Co. continues to comply with Exhibit A of our application to the • Jefferson County Board of Adjustments as it relates to fencing. As previously noted, the north pit boundary fencing was moved and