Keywords: US Navy 070424-F-8678B-044 Construction Electrician 3rd Class Jonathan Brace monitors the primary rock crusher while Constructionman Justin Dimmitt loads the hopper with a front-end loader.jpg en CAMP COVINGTON Guam April 24 2007 - Construction Electrician 3rd Class Jonathan Brace monitors the primary rock crusher while Constructionman Justin Dimmitt loads the hopper with a front-end loader During normal quarry operations Naval Mobile Construction Battalion NMCB 4 can produce an average of 60 tons of crushed rock per day U S Navy photo by by Air Force Master Sgt Rickie D Bickle RELEASED 2007-04-24 070424-F-8678B-044 Navy http //www navy mil/view_image asp id 45737 U S Navy photo by by Air Force Master Sgt Rickie D Bickle PD-USGov-Military-Navy United States Navy images from Camp Covington Guam Construction Electrician United States Navy Military loaders Naval Mobile Construction Battalion 4 Vehicles of the United States Navy |