Mark Powley, President, grew up in a family owned sand & gravel operation.  After returning from mechanics school, Mark went to work at his family’s gravel operation.  He started in maintenance and worked himself up to Superintendent of the gravel operation.  He started selling sand & gravel equipment in 1998 and came to work at Loos Service & Supply, Inc. in 2001.  Mark has over 32 years of working knowledge in the aggregate industry. Betty Jenkins, (Retired July 31, … Continue...