New York Times: The patients come with burns from hot water, with hands and fingers crushed by steel tongs, with injuries from chains that have whipsawed them off their feet. Ambulances carry mangled, bloodied bodies from accidents on roads packed with trucks and heavy-footed drivers. The furious pace of oil exploration that has made North Dakota one of the healthiest economies in the country has had the opposite effect on the regions health care providers. Swamped by uninsured laborers flocking to dangerous jobs,...