DENVER (AP) — Colorado lawmakers are considering the nation's first statewide gas well map requirement in response to a deadly home explosion traced to an inactive line.

The proposal would force energy drillers to provide state regulators the locations of all their gas lines, a national first. A Democratic House committee approved the idea 6-3 Friday.

The measure is inspired by a home explosion that killed two people last month in Firestone, a small town in northern Colorado. The April 17 blast was traced to gas seeping from an old severed underground pipeline, called a flow line.

The well was...