Aquila Inc., of Kansas City, has filed an involuntary Chapter 11 petition against C.W. Mining Co., which also does business at Co-op Mining Co., in an effort to collect a $24.8 million judgment it won against it. Joining the petition were House of Pumps Inc. and Owell Precast LLC, of Sandy. House of Pumps says it's owed $19,255, and Owell claims to be owed $3,440.

The involuntary petition, filed Tuesday in the U.S. Bankruptcy Court in Salt Lake City, alleges that C.W. Mining isn't paying its debts as they become due.

In 2003, 75 mostly Latino miners struck the Co-op Mine and picketed for months over low pay, safety conditions and to force the company to rehire workers they say were fired for union activities.

In late October of last year, Federal Judge Tena Campbell ordered Price-based C.W. Mining to pay nearly $25 million to Aquila for failing to deliver on a contract for hundreds of thousands of tons of coal. Filing the involuntary petition against the company, Aquila is seeking to recover the litigation award and interest.