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In this colliery are now difcovered five workable feams or 

 bands of coal, befides feveral fmaller feams which are not 

 worth the working. 



In the pit named King-pit, which is the deepeft pit In this 

 colliery or in Great Britain, the firft feam or band is called 

 the Crow Coal, which is two feet two inches thick. It lies 

 at the depth of fixty yards. 



The fecond feam or band is called the Yard-band, in thick- 

 nefs fonr feet fix inches, and lies at the depth of one hundred 

 and fixty yards. 



The third feam is called the Bannock-band, about eight feet 

 thick, including two metals, which are about twelve inches 

 thick. It lies at the depth of two hundred yards. 



The fourth feam is called the Main or Prior-band, which is 

 from ten to twelve feet thick, and about two hundred and 

 forty yards deep. 



The fifth feam is called the Six-quarters Coal, about five feet 

 thick. It lies at the depth of three hundred and twenty yards. 

 No part of this laft feam has been yet wrought. 



What other feams lie below thefe is yet unknown. No 

 trial has been made above twenty yards below the fifth feam, 

 which makes the greateft perpendicular depth hitherto funk 



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