About Us


Mark Powley, President, grew up in a family owned sand & gravel operation.  After returning from 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 29 years of working knowledge in the aggregate industry.

Betty Jenkins, Secretary/Treasurer, has been with Loos Service since 1987 and has handled inside and outside sales along with being the office manager.

Don Bloss (Retired November 2014) – Sales    Don had worked in the aggregate industry since 1963 and since 2003 with Loos Service.  He worked over 50 years selling equipment to the aggregate industry.

Ron Witt – Sales   Ron came to work for Loos Service in the spring of 2006.  He previously worked at a gravel operation where he was involved in crushing, screening, dredging and equipment maintenance. Ron has 26 years of experience in the gravel industry.

Jessica Murphy joined Loos Service in the fall of 2013 as an administrative assistant and also handles inside sales.

As you can see, we have over 150 years of experience in the sand and gravel industry to offer our customers.  We look forward to working with each of you.