Every company, whether incorporated or not, engaged in the mining of coal who may employ agents, servants, or employees, those agents, servants, or employees being in the exercise of due care, shall be liable to respond in damages for injuries or death sustained by an agent, employee, or servant when resulting from the careless omission of duty or negligence of the employer or which may result from the carelessness, omission of duty, or negligence of any other agent, servant, or employee of the employer, in the same manner and to the same extent as if the carelessness, omission of duty, or negligence causing the injury or death was that of the employer.