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values and expectations as the rest of the population. However, as they <br /> become.dependent upon mining for their livelihood rather than agricul- <br /> ture or some other source then attitudes may change to reflect those of <br /> the mining population. Immigration of miners from outside the region <br /> would cause greater social disruption since the newcomers would not be <br /> likely to hold all of the same values as long-time residents of the <br /> North Fork Valley. The FWCCCES gives a more complete discussion of the <br /> social impacts of coal related population growth. <br /> As with other occupations there are inherent hazards associated <br /> with underground coal mining. Information from the U.S. Department of <br /> Labor indicates that the Orchard Valley Mine has a disabling accident <br /> rate of 8.43 per 200,000 man hours worked. This compares to an industry- <br /> average of 10.919 per 200,000 man hours worked. Disabling refers to an <br /> accident that causes a person to miss work or to be assigned different <br /> duties because of r3strictions caused by an injury. Assuming that <br /> disabling accidents would increase proportionally with the increased man <br /> hours needed to increase coal production an increase of approximately 9 <br /> disabling accidents per year would be expected. However, as an operation <br /> increases in size its potential to reduce its injury rate becomes <br /> greater. Therefore, the increase in accidents may not reach this <br /> projected level. <br /> Land Uses--Transportation. A short discussion of impacts due to <br /> transportation exists in the TE/EAR, Chapter 3. A Regional Analysis of <br /> Transportation Impacts exists in the FWCCCES, p. 283-290. <br /> There would be an increase in truck traffic from the mine to the <br /> train load-out. Presently there are approximately 112 truck round trips <br /> per day during one 8 hour shift. The shift operates for four weeks from <br /> 7:00 a.m. to 3:00 p.m. ; and from 3:00 p.m. to 11 :00 p.m. for two weeks. <br /> This averages a truck passing any given point every 2.1 minutes during <br /> the operating shift (8 hours). <br /> The increase in production from the present rate of production to <br /> 1.3 million tons per year would result in 208 round trips by haulage <br /> trucks continuously from 7:00 a.m. to 11 :00 p.m. for 250 days per year. <br /> At this rate a truck would pass a given point every 2.3 minutes for <br /> sixteen hours of every day. <br /> A breakdown of coal haulage weight per unit of time is as follows: <br /> 1.3 million tons/year = 5,200 tons/day <br /> 5Q days/year <br /> 5,200 tons/day = 325 tons/hour <br /> 16 hours/day <br /> 325 tons/hour = 13 truck loads/hour <br /> 25 tons/truck load <br /> 13 truck loads/hour = 0.22 truck loads/minute <br /> 60 minutes/hour <br /> 20 <br />