Port Dinorwic, Caernarvonshire, Wales.
L/S of "the world's largest slate quarry", tilt down to show a steam train at the bottom of the pit. M/S of a man drilling a hole into the rock face. C/U of the man, he wears a hard hat. C/U of the drill boring into the rock. Low angle shot of the man...
Clay is extracted from man-made pits then turned into powder in St Austell.
Pit ponies are brought out of the mines to be shown at the International Horse Show.
Lads from the Yorkshire pits race their ponies.
People wait for news of relatives after an explosion at Markham Pit.
Pit ponies are allowed to gambol across a field before being taken to a Pit Pony Show.
Pit ponies are ridden bareback at Pitmen's Derby in Thorpe, Yorkshire.
Various shots of pit ponies and homing pigeons.
Motor racing at Brooklands race track in Surrey.