pitprops

we need to use a pitprop to support the roof.

the miners placed a pitprop to prevent collapse.

he found a sturdy pitprop in the old mine.

using a pitprop is essential for safety in tunnels.

the pitprop broke under the weight of the rocks.

they installed a new pitprop to ensure stability.

inspecting the pitprop regularly is important.

he learned how to position the pitprop correctly.

without a pitprop, the structure could be dangerous.

the crew worked quickly to install the pitprop.