Plymouth gas tank still draining after explosion

Plymouth gas tank still draining after explosion »Play Video
PLYMOUTH, Wash. -- There's an update on the natural gas explosion that rocked the Plymouth area last month.

KEPR learned the Williams Company is still draining the 14-million gallon tank. The company says it's a slow process because natural gas is stored at freezing temps and has to change states several times before it can drain. The tanks need to be emptied for the investigation to continue.

Pieces of the exploded pipe were sent to metallurgists to determine what may have caused the blast.

The company is planning a public meeting in the coming weeks.