Local gardeners will know that along with evidence of coal in the soil there is a great deal of sticky yellow clay a couple of feet below the surface. There were several clay pits and brickworks in Coleorton. Bricks were used for house-building and also for mining.
John Clifford reports that around 1841 his namesake worked in brickyards in Peggs green at the age of 12. See History of the Clifford family (pdf) page 9.
Census records from 1841 onwards recorded the employment of residents.
You can see how many people worked in the mines and potteries during the 19th century from the Census figures >>.
Bear in mind that in 1884 Rotten Row (Lower Moor Road area) was transferred to Coleorton from Thringstone, so earlier records for Rotten Row - up to 190 people - are under Thringstone census.) Also Peggs Green was at various times in Thringstone or Swannington parishes.