Seabees Expeditionary Rock Crusher recycles war debris, .
2011/04/13· The Expeditionary Rock Crusher crushes rocks and material leftover from war – damaged buildings, roads and infrastructure, to create the ingredients of concrete and asphalt. Chuck Zimmerman, NFELC CESE and NCF systems integration manager said, "When Seabees go into a war zone and need to build the infrastructure to .