Roman funerary practices include the Ancient Romans' religious rituals concerning funerals, cremations, and burials. Both manual bamboo wood pyres and electric cremation are used for Hindu cremations. There have been over 60,000 cremations and over 40,000 burials there. The nearby Heath Wood barrow cemetery contains about sixty cremations (rather than burials). Sky Burials can be followed by optional automatic cremations of the skeletons left behind. Before LeMoyne's crematory closed in 1901, it had performed 42 cremations. It is estimated that the crematorium now averages around 2,000 cremations a year. The Air Force dropped logs to build pyres for mass cremations of the victims. Other finds include traces of cremations and barrows. Pretakalpa learns the rites of a Hindu to perform the cremations. Mass cremations of recovered bodies began almost immediately after the sinking. Cypress was used to fumigate the air during cremations. By 1913, there had been 2,392 cremations performed at Rosedale. Crestone, Colorado is the only place where open-air cremations are legal in the United States. From April 1938 to March 1939, 90% of all cremations at Weimar came from Buchenwald.