LaFAYETTE, Ga. - Authorities filed 56 additional charges yesterday against a crematory operator accused of discarding hundreds of corpses he was paid to cremate.

The new charges bring to 174 the number of theft by deception counts against Ray Brent Marsh, who remains in Walker County Jail. A magistrate denied Marsh bond on Monday, noting that investigators were likely to file further charges.

So far, 339 rotting corpses have been discovered dumped in pits, left in sheds and stacked in vaults at the Tri-State Crematory.

Authorities continued yesterday to drain a small lake nearby where a skull and a torso were discovered last month. Officials estimate the lake is 8 feet deep at its deepest point.

Authorities said they will probably spend more than a week dredging the dry lake bed for human remains.

The charges accuse Marsh of allegedly taking payment to cremate the dead and instead passing off cement powder and dirt as ashes.

Investigators have said Marsh told them the incinerator was broken.

But on Monday, authorities disclosed for the first time that the incinerator is working properly. State emergency agency spokeswoman Lisa Ray said the machine's manufacturer successfully tested it last week.

In another disclosure, prosecutor Buzz Franklin said investigators had discovered photos of decomposed bodies on Marsh's office computer. Franklin did not say why Marsh was storing the photos and declined to elaborate.

Magistrate Judge Jerry Day, noting more charges were likely, denied Marsh bail for a third time. Prosecutors said they were worried Marsh might be killed if released.

Sheriff Steve Wilson testified that at a victims' meeting one woman said she wanted to hang Marsh, and the threat was met with thunderous applause.

Defense attorney Ken Poston criticized the prosecution for discussing the threats. "If that isn't inviting trouble and torches and ropes, then I don't know what is," Poston said.