In the event that a well being drilled penetrates the excavations of any mine, it must be cased with casing of approximately the same diameter as the diameter of the hole, the hole to be drilled thirty feet or to solid slate or rock and not less than ten feet below the floor of such mine, and the casing shall be placed in the following manner:  One string of casing shall be placed at a point above the roof of said mine so as to shut off all of the surface water; then the hole drilled through said mine and another string of casing put in.  The bottom of the second string of casing, or the one passing through said mine, shall not be nearer than ten feet, or more than thirty feet from the floor of the mine where it passes through the same.

When any well which has been drilled is to be abandoned and has passed through the excavations of any coal mine from which the minable coal has not all been removed, the person, firm or corporation owning said well shall leave in said well the casing passing through said mine from a point not less than ten feet, nor more than thirty feet below the floor of said mine, and extending above the roof of said mine at least five feet.  A seasoned wooden plug shall be driven to a point at least forty feet below the floor of the mine and the hole above said plug together with the casing left in, which extends through the coal, shall be filled with cement; then a seasoned wooden plug shall be driven on the top of said casing, and the hole filled with cement for a distance of not less than twenty feet.

=Interpretation—­“coal bearing and coal producing township."=

A coal bearing or coal producing township of any county shall be interpreted to mean any, township as a unit, in which coal is found that, is being mined, or is of such thickness as to make it likely to be mined at some future time.  Any well drilled in such township, whether or not it passes through any coal, the same being barren in certain sections of such township, or the well being commenced below the line of outcrop of the coal, will nevertheless be required to be mapped and abandoned in accordance with the regulations and provisions of this section as given above, which shall apply uniformly throughout any coal bearing or coal producing township of any county.

=Relating to illuminating oil for mines.=

=Composition of illuminating oil for use in mines.=

Sec. 974.  No person, firm or corporation shall compound, sell or offer for sale for illuminating purposes in any mine any oil other than oil composed of not less than eighty-two per cent, of pure animal or vegetable oil, or both, and not more than eighteen per cent, pure mineral oil.  The gravity of such animal or vegetable oil shall not be less than twenty-one and one-half, and not more than twenty-two and one-half degrees Baume scale, measured by Tagliabue or other standard hydrometer, at a temperature of sixty degrees