During the 19th century there was a significant coprolite mining industry in (mainly) Cambridgeshire and Suffolk, to provide phosphate for fertiliser. The discovery of guano islands killed it off, but it was revived for munitions during WW1.
During the 19th century there was a significant coprolite mining industry in (mainly) Cambridgeshire and Suffolk, to provide phosphate for fertiliser. The discovery of guano islands killed it off, but it was revived for munitions during WW1.