dakota ave near cannon blcd.12 inch gas line cut by backhoe. evacuztion for 3 blocks with on grade school. lines off to cover. calls for manpower. gas company onscene in 20min. kannapolis pd to assist in evaction. kannapolis engies 11,21,31,ladder 11 car 11 landis engine 581 concord haz nat7 rescue 7 engines 2