Charleston Gazette: Massey Energy officials said Monday that safety checks revealed no methane buildup or ventilation problems at the company’s Upper Big Branch Mine just prior to the explosion that killed 29 miners three weeks ago. “There was no evidence of a dangerous condition,” said Massey board member Stanley C. Suboleski. “I’m mystified at what occurred at the mine on April 5.” Suboleski joined Massey CEO Don Blankenship and two other company board members, Bobby Inman and Robert Foglesong, …