goaf

Somehow it did not seem entirely innocent, this goaf.

This goaf collapses under the weight of the overlying strata.

One practice linked with this stage of the harvest was called riding the goaf in Suffolk.

This may be followed by a "suck back" as the air pressure is equalised with the low pressure created higher up in the goaf.

The cavity behind the longwall is called the goaf, goff or gob.

At Bradford, which had no spoil heap, the goaf was infilled with spoil or waste.

As mining progresses and the entire longwall progresses through the seam, the goaf increases.

The strata approximately 2.5 times the thickness of the coal seam removed collapses and the beds above settle onto the collapsed goaf.

In 1934 his novel Goaf appeared in an English version, as well this year Heslop also published a detective novel, The Crime of Peter Ropner.

Many of the older Suffolk farmworkers, now long retired, remember riding the goaf as lads; and they have described how they rose higher and higher on the mow as it increased in depth.

The same year Heslop's first novel Goaf was published, but it was in a Russian translation as Pod vlastu uglya and did not appear in England until 1934.

This results in the tendency for a large void to be created behind the roof supports in the goaf (or gob) which collapses when the overlying cantilevered strata can no longer support its own weight.

In 1934 the original English version of Heslop's novel Goaf was published, as well as The Crime of Peter Ropner, which is an "attempt at a crime novel from a left-wing perspective".

Harold Heslop literary career began in 1926 with the Russian version of Goaf and then, starting with The Gate of a Strange Field, Heslop published five novels in England between 1929 and 1946, while his autobiography, Out of the Old Earth, was published posthumously.