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4.4.2.2 Pre-mining Sampling Sites <br /> Based on the estimates of sampling intensity required to satisfy the appropriate statistical confidence <br /> limits, each range site was independently randomly sampled. Sampling point selection was accom- <br /> plished by locating range sites on 4800 scale maps (Map M48). Each premine sample plot was a <br /> 1.8-meter by 1.8-meter square plot enclosed by a 48-inch woven wire fence. A double randomization <br /> process was followed in the placement of each plot on the 4800 scale map. First, a total of 25 points <br /> were picked on a transparent sheet of random dot paper. These points were numbered from one to <br /> 25 in a random manner. A random number generator with upper and lower limits of one and 25 was <br /> used to pick ten of the 25 numbers. The paper was then dropped repeatedly onto a 4800 scale map <br /> of all range sites. Each time the random dot grid was dropped, the ten random points were marked on <br /> the map. This process was continued until a total of 1.5 times the required number of sample points <br /> per range site were located on the map. All points were then numbered and again the random <br /> number generator was used to determine which points would be sample points. (Note that the <br /> sampling points are not shown on Map M48 since sampling point locations will change yearly.) <br /> Once sample points were randomly located on the map, the processes of field locating and fencing <br /> were begun. Field locating was done by pacing the distance from a easily recognized landmark. The <br /> point where the toe of the pacer's boot touched the ground on the last pace was marked. <br /> • Once the points were located in the field, they became the basis for orienting all cover and density <br /> transects. <br /> 4-140 <br /> Revision: <br /> Approved: <br />