daily maintenance of equipment as follows: Operates rock, sand and gravel plant to batch, crush, or segregate materials... in sand and gravel plant. Observes gauges, dials and operation of machinery to ensure conformance to processing...
daily maintenance of equipment as follows: Operates rock, sand and gravel plant to batch, crush, or segregate materials... in sand and gravel plant. Observes gauges, dials and operation of machinery to ensure conformance to processing...