By VICKI SMITHMORGANTOWN, W.Va. (AP) â¿¿ MORGANTOWN, W.Va. (AP) â¿¿ Separate accidents at two West Virginia coal operations Friday left one worker dead, two others injured and a fourth worker missing, company and state mine safety officials said. An electrician was killed when he became caught between a scoop and a continuous mining machine around 1:30 a.m. at the Pocahontas Mine A White Buck Portal near Rupert in Greenbrier County, said Leslie Fitzwater of the state Office of Miners' Health Safety and Training. The mine is owned by White Buck Coal Co., a subsidiary of Virginia-based Alpha Natural Resources. Alpha identified the victim as Steven O'Dell, 27, of Mount Nebo, an employee of its Alex Energy subsidiary. It's the sixth mining fatality in West Virginia this year. "We are all saddened by the loss of a talented colleague and friend," Alex Energy President Craig Boggs said. In north-central West Virginia, emergency officials were draining a coal slurry pond to search for a bulldozer operator who was unaccounted for after an embankment collapsed, sending three into the water. U.S. Mine Safety and Health Administration spokeswoman Amy Louviere said a "massive failure" occurred around 12:15 p.m. Friday at the Nolans Run impoundment of Pennsylvania-based Consol Energy's Robinson Run mine in Harrison County. One dozer operator and two engineers were on the platform when it collapsed. Both engineers were rescued and were in non-critical condition. Governor's office spokeswoman Amy Shuler Goodwin said sonar detected an object in the pond and that officials were considering sending in divers. The water is about 12 feet deep. Consol Energy spokeswoman Lynn Seay said the cause of the failure was unclear. Preparations plants wash raw coal to help it burn efficiently before it is shipped to customers. Coal slurry ponds contain both the solid refuse and the wastewater byproduct known as slurry.