(a) No physician, who in good faith gives instructions to a certified emergency medical technician or certified mobile intensive care personnel, a registered nurse, or a physician's assistant shall be liable for any civil damages as a result of issuing the instructions, unless guilty of gross or willful negligence.(b) No certified emergency medical technician or certified mobile intensive care personnel, registered nurse, or physician's assistant who in good faith attempts to render emergency care to any sick or injured person in or about a coal mine, or his employer, shall be liable for civil damages as a result of any acts or omissions, unless guilty of gross or willful negligence. This section shall not affect any employer's liability under the Workers' Compensation Act.