sentences:  In the 1900s, the Tuscarora Valley began to suffer from increased labor expenses and operating costs.The causes are not understood in detail, although they may be attributable in part to capital improvements to the original lightly built narrow gauge infrastructure, including the construction of concrete abutments for the railroad's bridges and a creamery and warehouse in Port Royal in 1912.This era also saw a turnover in the railroad's management; after the death of T.S.