71 Pa. Stat. § 951
The bureau shall undertake, conduct, and maintain the organization of a thorough and extended survey of the State for the purpose of elucidating the geology and topography of the State.
The survey shall disclose such chemical analysis and location of ores, coals, oils, clays, soils, fertilizing and of other useful minerals, and of waters, as shall be necessary to afford the agricultural, mining, metallurgical, and other interests of the State a clear insight into the character of its resources. The survey shall also disclose the location and character of such rock formation as may be useful in the construction of highways or for any other purpose.
The bureau shall collect such specimens as may be necessary to form a complete cabinet collection of specimens of the geological and mineral resources of the State. The State Museum shall be the repository of such specimens.
The results of the survey shall be, with the results of previous surveys, put into form convenient for reference.
71 P.S. § 951