CRESTON, Iowa—Precision Optical Group, based here, is expanding its P.O.G. Labs network with the addition of CRX Laboratories, an industrial safety and government contract business located in Greenville, S.C. and Athens, Tenn. Precision Optical Group has secured a minority interest in the company.

CRX Laboratories will continue to be managed by Warren A. Herron, a veteran of the industrial safety eyewear business, and will keep the same name and current locations. The CRX Laboratories partnership now consists of Warren A. Herron, a Greenville, S.C.-based ophthalmology group known as Southern Eye Associates and Precision Optical Group.

The partnership allows CRX Laboratories to offer a full product line to its current and potential customers, according to Precision Optical Group, and allows P.O.G. Labs to expand the industrial portion of its business.

"Our unique partnership will provide the tools for all of us to continue to grow our businesses. We are thrilled to have Warren and his staff as partners," said Mike Tamerius, co-owner of Precision Optical Group.

The P.O.G. Labs consists of CRX Laboratories, K-Optical in Detroit, Mich., JMR Wholesale in Denver, Colo. and Precision Optical Group.