pit props meaning in Hindi

Examples

1. Recently dendrochronology had been employed to date the timber pit props.
2. Steel supports began to replace the traditional timber pit props.
3. She was carrying a cargo of magnesite and pit props.
4. Gin Pit had a sawmill and supplied pit props to neighbouring collieries.
5. He purchased half a dozen landed estates in Saxony to supply timber for pit props.
6. The thinnings were graded and the straighter poles used as pit props in the coal industry.
7. The use of wooden pit props to support the roof was an innovation first introduced about 1800.
8. The pit props and steel bands are not for show, but to hold up the mine roof.
9. The south-east corner of the keep was undermined and the pit props soaked in pigs fat.
10. Between 1930 and 1935 Peter Parsons from Long Island was contracted to produce pit props for the overseas market.