MARIANNA, Fla. -

Researchers are working on two burials at a former Florida reform school where students say they were abused.

The University of South Florida researchers continued on Sunday for a second day the slow, painstaking process of unearthing remains in the hopes of identifying the boys who were buried at the now-closed Arthur G. Dozier School in the Panhandle. The digging and work will go on through Tuesday.

Erin Kimmerle is the USF anthropologist leading the excavation. She says preservation was good and researchers have found skeletal remains in one coffin. A second coffin will be opened later Sunday.

Researchers are also hoping to learn how the boys died. Former inmates at the reform school have detailed severe beatings by guards during the 1950s and 1960s.