396 



TRANSACTIONS OF THE 



WORK PERFORMED BY THE FOLLOWING 



MINES. 



( 



ENGINE, 

 and the 

 diameter 

 jf the cylinder. 



Load 

 in 



horse 

 power, 

 on the 

 Diston. 



Load 

 per 

 square 



inch, 

 on the 

 siston. 



Length 

 of the 

 strol?e, 

 in the 

 cylin- 

 der. 



No. 



of 

 lifts. 



Depth. 



Diam- 

 eter of 



the 

 pump. 



Time. 



Con- 

 sump- 

 tion of 

 coal in 



bush- 

 els. 



Lanescot 



Sawle's 

 engine, 

 24 inches, 



39,6 



lbs. 

 13,14 



feet 

 8,5 



1 



2 

 1 



fms ft 



43 

 53 2 

 11 1 



ins. 



7 



8 



8f 



Sep 4 



to 

 Oct 3 



248 



Roche Rock 

 Mine 



36 inches, 

 single. 





iU,o 



8,5 



1 

 i 



2 



26 3 

 10 0 

 20 0 



121 



115 



8* 



ditto 



00 i 



Wheal 

 Leisure 



Truran's 

 engine, 



70 inches, 

 single. 



283,4 



11,05 



10 



2 

 1 

 1 

 1 



73 5 

 22 ] 

 12 0 

 12 1 



16 



iH 



m 



Sep 3 



to 

 Oct 2 



- 



Ditto 



South 

 engine, 

 66 inches. 



206,3 



9,05 



9,83 



2 

 1 

 1 



62 0 

 10 5 

 10 5 



16 



101 



ditto 



476 





single. 



















Wheal Vor 



Borlase's 

 engine, 



80 inches, 

 single. 



418,2 



12,48 



10 



6 

 1 



188 2 

 13 3 



14 

 lOi 







Aug 30 



to 

 Sep 27 



1966 





•* 



Trelawny's 









6 

 2 



150 5 

 45 1 



14 



15 







Ditto 



engine, 

 80 inches, 

 single. 



524,4 



15,65 



10 



3 

 1 

 1 



33 0 

 18 3 

 12 0 



161 

 9i 



ditto 



3438 



Ditto 



Woolf's 

 engine, 

 53 inches, 

 single. 



235,2 



16 



9 



1 



5 

 1 



30 

 134 0 

 10 0 



10 

 12 

 lOf 



ditto 





Ditto 



Carleen 

 engine, 

 45 inches, 

 single. 



180,2 



17 



6,8 



1 

 1 

 5 

 1 

 1 

 1 



28 2 



29 3 

 901 

 113 

 10 2 

 13 1 



911 



^2 



8 



10 . 

 lOi 



8 



8 J 



ditto 



762 



