specially concurring with whom RAPER, Justice, joins.
In concurring with the majority in this case, I maintain the position taken by me in Yost v. Wyoming State Treasurer ex rel. Wyoming Worker’s Compensation Division, Wyo., 654 P.2d 137 (1982), to the effect that § 27-12-603(b) requires the causative exertion to be “clearly unusual to, or abnormal for, employees in that particular employment,” and that it does not authorize recovery when the exertion is only unusual to, or abnormal for, the particular employee.