OSHA 500, 510 REQUIRED First Aid, CPR, AED instructor or ability to obtain within 6 months of hire Highly knowledgeable in Excavations, Confined Space Entry, Traffic Control, Respirable Crystalline Silica, Rigging, Heavy Equipment Operations and Fall Protection. Murren is a full-service, well established industrial, civil, and power industry contractor performing work throughout the Southeastern and Mid-Atlantic United States with offices located in Georgia, Florida, South Carolina and Virginia.