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f <br />i <br />• 2.05.3(2) <br />The major equipment to be utilized at the Bear No. 3 Mine is <br />presented in Table 9, Equipment List. <br />Ventilation <br />~ The objective of mine ventilation is to provide an adequate supply <br />of uncontaminated air to the working areas. The volume and <br />velocity of this air will be sufficient to dilute, render harmless <br />or carry away, flammable, explosive and harmful gases, as well as <br />dust, smoke, and explosive fumes. The projected mine air courses <br />have been designed to provide a volume of air necessary to meet <br />~ these objectives. <br />On one side of the main entries there will be two or three intake <br />air courses. One of the intake air courses will also be used as an <br />haulage entry. The beltline entry, usually the middle entry, is <br />isolated from the intake and return air flows with ventilation <br />stoppings. The belt line entry is a neutral air course. Two or <br />three return air entries are located on the opposite side of the <br />• beltline entry. <br />• <br />2.05-8 Rev. 11-30-93 <br />