Embossed: A metal roller is used to heat-stamp the fabric, producing a pattern.

A metal bag is then inserted behind the back cut and filled with water, which pushes the block away from the rock face(on the metal rollers).

These oats are steamed at the mill, then flattened with giant metal rollers.

At one end of the room, already opened on a counter next to a conveyor belt of metal rollers, was the steel airline coffin.

Roller mills used metal rollers, rather than millstones to grind grains.

Moving belt - these are generally built with mesh metal belts or rubber walking surfaces over metal rollers.

On entering, there is a 10-metre acceleration zone where the 'ground' is a series of metal rollers.

Below this a series of paired metal rollers, each set above the other, crushed the rock into ever-smaller pieces.

Corpses from elevator loaded on to conveyor belt (metal rollers).

This mixture is then turned in a machine with metal rollers, where workers add extra natural rubber, and ensure that the mixing is even.