The H.B. Hays and Brothers Coal Railroad was a narrow gauge railroad operated to carry coal from the Hays family mines along Becks Run and Streets Run in Allegheny County, Pennsylvania. Both branches included an incline, and both are visible in the engravings below, one just south of Six Mile Ferry, the other in the hills south of the mouth of Becks Run. The mines, railroads, and inclines were designed by Pittsburgh engineer John H. McRoberts.