This act is an exercise of the police power to provide for the improvement and conservation of lands affected by the mining of anthracite coal by the open pit or strip mining method; to prevent the combustion of such coal and the pollution of rivers and streams and improve the use and enjoyment of such lands; to preserve the value of such lands for taxation to decrease and prevent soil erosion and aid in the protection of game and wild life; and generally to provide for the public safety, health and general welfare.