

(mmm-hmm) Sixteen cylinders rumbling down the line High iron humming in the
cool midnight
Twin sealed beams cutting through the dark Nothing out ahead but the
amber grade mark
Three thousand horses in a long steel frame Pulling ninety loads through
the valley rain
Cab lights low, needle holding steady green Smoothest heavy hauler that the
south has seen
(keep rolling) Oh,
roll on, heavy steel,
keep the grade tight
Steady iron heartbeat running through the night
Power in the throttle,
calm in the soul
Out where the black rails roll
Crossing over rivers where the water sits still
Creeping past the timber on the eastern hill
Nobody watching
but the stars up high
Just the diesel engine
breathing out a sigh
Oh, roll on, heavy steel,
keep the grade tight
Steady iron heartbeat running through the night
Power in the throttle,
calm in the soul
Out where the black rails roll
(yeah, keep rolling on)
Green light
clearing all the way to dawn...
Keep that notch steady... (mmm-hmm)