LINDEN, N.J.--(BUSINESS WIRE)--Camin Cargo Control, Inc. announced today the completion of a majority investment by Metalmark Capital, a leading US private equity firm. Camin Cargo Control, headquartered in Linden, NJ, is a leading provider of testing, inspection, certification and additive services in the oil, gas and petrochemical industries. Camin Cargo Control opened its first office in New York in 1982 and has since expanded to 49 locations throughout the Americas. “Metalmark is a great st