About Us

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 35 years of working knowledge in the aggregate industry.

Ron Witt, Outside Sales, 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 over 34 years of experience in the gravel industry.

Jared Powley, Shop Manager, came aboard in 2015. He has a welding degree with several years of experience.

Joel Powley, Fabricator, has been part time with us since 2016. He joined the team full time in February of 2020. He was in home construction for 2 years and fabricating for about a year.

Nicki Powley, Secretary/Treasurer and Inside Sales, rejoined the company in January of 2018 after previously working here for 5 years.

We have over 110 years of experience in the sand and gravel industry to offer our customers.  We look forward to working with each of you.