A federal official says the remote Utah coal mine where six men remain trapped is lacking key provisions mandated by sweeping federal mine safety legislation passed last year.

The Mine Improvement and New Emergency Response Act requires mines to have enough air, food and water to sustain life at least four days.

But U.S. Mine Safety and Health Administration official Allyn Davis says the Crandall Canyon mine hasn't installed all the equipment to provide 96 hours of air, food and water to trapped miners. While the equipment is required, Davis says it's difficult to get.

The law was supposed to solve these and other problems that arose in last year's Sago Mine explosion, which killed a dozen miners. But key provisions of the law have yet to make their way to most of the nation's 670 underground coal mines.

Requirements for high-tech two-way communications and tracking equipment don't take effect until June 2009. Also still to come are provisions dealing with refuge chambers, mine rescue teams and stronger seals between active and inactive workings.