547 A.2d 1276 Timothy J. Kline et al., Appellants v. Pennsylvania Mines Corporation et al., Appellees. Frances L. Depto et al., Appellants v. Pennsylvania Mines Corporation et al., Appellees. Commonwealth Court of Pennsylvania.Argued May 25, 1988. September 23, 1988. Department of Environmental Resources — Sovereign immunity — Motion for judgment on the pleadings — Duty […]