SALT LAKE CITY — A mechanical company listed as a defendant in a lawsuit involving workers injured and hospitalized after a pipe burst in 2010 asked for the complaint to be dismissed this week.

K.K. Mechanical Inc. is one of seven defendants listed in the suit, filed by two of the 12 injured workers. The injuries occurred when a high-pressure pipe carrying water heated to 380 degrees burst in an underground vault at 1850 E. 300 South, just north of the Huntsman Center. Many of those injured suffered severe burns, three were critically injured and 12 were hospitalized.

The men were employees of subcontractors who were hired by Layton Construction and were working in tunnels that ran from the university's main generator to heat buildings on campus.

K.K. Mechanical Inc. said the plaintiffs had insufficient information against it in many of their allegations, and asked the complaint against it be dismissed in an answer to an amended complaint and cross claims filed Monday in the 3rd District Court. K.K. Mechanical Inc. also asked to recover the cost of court and attorney fees from defending the case.

The other defendants listed in the suit are the state of Utah, the University of Utah, the Utah Division of Facilities Construction Management, Layton Construction, Reynolds Brothers Excavating and Van Boerum & Frank Associates.