The testify states so as to 18 Massey employees invoked their Fifth Amendment civil rights in contradiction of self-incrimination throughout the investigation amongst them past Massey head of the company Don Blankenship. Tuesdays bang accuses Blankenship, an outspoken critic of federal mining regulations, of pressuring subordinates to find back to go to work similar to halting operations due to safety issues.An employee testified to higher management threatened to fire crews while they stopped production and to Massey president Don Blankenship himself pressured management to directly resume production, the recount states.Blankenship retired inside December 2010, and his attorney did not return phone calls seeking comment Tuesday.An earlier state investigation found the mess stemmed from failures hip safety systems and possibly will own been prevented. with the aim of investigate found the mine lacked ample ventilation; dampen sprays on equipment were not by the book maintained and disastrous to function like they be supposed to have; and the mining company didnt touch federal and state safety principles instead of the claim of stun dust, a crucial tool hip keeping highly hazardous coal dust from exploding.