130403-D-PF830-002
At 31,000 lbs. and 13 feet in diameter, the brass and manganese alloy ship’s screw (maritime talk for propeller) is the largest of the artifacts in the plaza. The train display in the foreground consists of four artifacts: a railroad crossing signal or “cross bucks,” a freight car truck bolster (“trucks”), a rail switch, and a section of rail and ties. Photo by Bob Fehringer, USTRANSCOM/PA
130403-D-PF830-002
At 31,000 lbs. and 13 feet in diameter, the brass and manganese alloy ship’s screw (maritime talk for propeller) is the largest of the artifacts in the plaza. The train display in the foreground consists of four artifacts: a railroad crossing signal or “cross bucks,” a freight car truck bolster (“trucks”), a rail switch, and a section of rail and ties. Photo by Bob Fehringer, USTRANSCOM/PA