"Locomotive Performance on Grades of Various Lengths." Beverly S. Randolph. [321].
Discussion: C.D. Purdon, and John C. Trautwine, Jr., 329.
SAFETY LAMPS.
"Federal Investigations of Mine Accidents, Structural Materials, and Fuels." Herbert M. Wilson. (With Discussion.) [190].
SHAFT SINKING.
"Pressure, Resistance, and Stability of Earth." J.C. Meem. (With Discussion.) [352].
SHEATHING.
"Pressure, Resistance, and Stability of Earth." J.C. Meem. (With Discussion.) [352].
STAND-PIPES.