Section 3. That said company shall have the right to build or construct a railroad from the State line in the valley of Tunianguiant, in the county of MKean, up said valley by such route as to the president and directors shall seem best, to the coal mines in the town of Lafayette, and east of Lafayette corners in said county of MKean, with the privilege of such branches in the counties of MKean, Potter, and Elk, as they may need for the use of said mines. Said railroad to be commenced within two and completed within ten years from the passage of this act.