176 Mining Terms. 
Sropine. The act of breaking the ore above or 
below a level; when done from the back of the drift 
it is called overhand or back-stoping; when from the 
sole it is underhand stoping. | 
Srratum. A bed of rock or earth of any kind. 
Dana. The plural is strata. 
Strike. The extension of a lode or deposit on 
a horizontal line. Von Cotta. Synonymous with trend 
and course. 
Sruuis. Cross timbers at the foot of a stope. 
SuBLIMATION THEORY. That which refers the fill- 
ing of fissures to material deposited from ascending 
steam, or by condensation from a gaseous condition. 
SutpHipe. A chemical union of sulphur with a 
metal. 
SutpHuret. A sulphide. Sulphide is the more 
recent and approved term. 
Sump. The extension of a shaft, forming a pit for 
the collection of water. Corn. 
SyLvANITE. A native tellurium ; sometimes called 
graphic tellurium. 
SynpicaTE. An association or council of persons; 
in use since the war to designate any combination 
formed to carry out a large financial enterprise. 
Tackie. The windlass, rope and bucket. Corn. 
Tartines. The refuse discharged from the tail 
or lower end of a sluice, or washed from any sort of 
placer working. 
TreLLurium. A silver-white, brittle substance, gen- 
erally classed among metals; usually combined with 
gold, silver, lead and copper. Sp. gr., 6.65. At. wt., 
128. Symbol, Ze. 
Tin. A soft, malleable, white metal. Sp. gr., 7.2. 
Fusing point, 442 deg. Fahr. At. wt., 117.7. Symbol 
Sn. 
TrrpuTers. Miners who work a set, or piece of 
ground, taking the proceeds as wages, after royalty is 
deducted, but who work under direction of the owners 
and hold no possession or title as lessees. 
