Federal safety officials have cited Harrison Hoist Inc., Grand Prairie, Texas, for six serious safety violations, and and proposed a penalty against the company of $29,400, in connection with a tower crane collapse during disassembly at the University of Texas at Dallas that killed two workers July 7th.

The U.S. Occupational Safety and Health Administration cited Harrison Hoist for failing to ensure that the disassembly procedures positioned workers to minimize their exposure to danger and failing to ensure the procedures were developed by a qualified person, plus other violations.

In its comments on the six serious violations, OSHA did not identify the triggering cause of the collapse.

Harrison Hoist crews were working at the site of the new $60-million Arts and Technology Building on the Richardson, Texas campus when the accident occurred. Officials from Harrison Hoist could not be reached for comment. The company has requested an informal conference with OSHA, according to the Dept. of Labor.

The workers who died were Thomas Fairbrother Jr., 58, of Austin and Terry Weaver, 50, of Grand Saline, according to the Collin County Medical Examiner’s office.

Hunt Construction Group is the general contractor on the project.