Isaac Tyson, Jr., in Vermont. 657 



the time Mr. Tj'son was connected with tlie Strafford mine, 

 he, in company with others, commenced the opening of the 

 now celebrated copper mine at Yershire, which is nearly in 

 the same geological range with the Strafford copper. The 

 outcrop of the ore being high up on the southern slope of a 

 hill, Mr. Tyson at once decided to drive a cross-cut adit from 

 the foot of the slope and strike the ore many feet under its 

 outcrop. This adit was worked for nearly two years, and a 

 distance of ninety-four feet, driven into the solid rock in the 

 right direction to cut the vein at the most direct point, when 

 his associates in the enterprise became discouraged, and the 

 workings w^ere abandoned, contrary to the wishes of Mr. 

 Tyson, who had full confidence in the final result. 



To show his foresight, based on good judgment in min- 

 ing operations, it would be in place to add here that after 

 some years other parties took hold of this opening for cop- 

 per ore, and drove in the same adit four feet farther, and 

 came to a rich vein of copper ore. 



Some years after the Yershire mine had been abandoned, he 

 began to mine for copper ore in Waterbury, by sinking a 

 shaft where an outcrop of ore appeared ou the surface. Be- 

 fore the shaft had been sunk to a depth that would deter- 

 mine the value of the vein his health failed, and further 

 investigation was postponed, not to be resumed in his life- 

 time. 



Mr. Tyson's most extensive work in Yermont was done in 

 the south part of the town of Plymouth, named by him Ty- 

 son Furnace. 



Crossing the Green Mountains from the west, in 1835, in 

 search of minerals, he hit upon surface indications of iron 



