pillaring meaning in Hindi

Examples

1. The process was made easier by drilling along the pillaring line.
2. Various disadvantages of white phosphorus are discussed below, but one which is particular to smoke-screening is " pillaring ".
3. He continued on a yearly lease until 1946 when a roof fall caused by the continued pillaring closed the quarry for good.
4. In 1977 and 1982, Danish Arctic Contractors carried out a delicate re-pillaring of the two ice cap stations through a  jacking-up procedure that also laterally moved the station.
5. As a result of the unusual direction of the pillaring plane, the quarry yielded slate which was very long but quite narrow, and Kellow decided that it was suitable for slate ridging.
6. The quarrying and slate business did well until the early 1920s when demand fell and the Bryn Eglwys quarry was only kept open by pillaring the easy to obtain slate rather than by digging out new underground chambers.