Sioux Falls, S.D. (KELO-AM) - A construction company that ruptured a gas line in Dell Rapids on June 10, says MidAmerican Energy neglected to mark the gas line location with yellow paint as it was asked to do. The punctured line resulted in a gas leak and explosion. The explosion occured when the driver of a nearby SUV attempted to start his vehicle. May Construction filed a complaint with the state agency that operates the 811 call-before-you-dig hotline.