Small lead mine operated in the valley located south of Trerew farm, exploiting a northwest-trending lode. The lode was initially accessed via an adit starting in the southeast of the valley, connecting to a shaft situated 250 yards south of the farm where it intersected the lode. According to Hamilton Jenkin, two additional shafts were positioned 50 yards northwest and 100 yards southeast of this location. However, Dines suggests that the other shafts were situated 100 yards west and 150 yards northwest of Trerew farm, respectively. Atkinson also identifies an overgrown burrow in a field northwest of the farm, believed to be associated with the mine workings.

1860s -1865 1866-1870

Dines:

A mine, also called Trerew Wheal Rose, 1½ miles N.W. of Newlyn East (6-in. Corn. 39 S.E.) that worked a lode coursing about N. 25° W. An adit commencing 420 yds. S.E. of Trerew farm is crosscut 185 fms. W. to the lode at a shaft 250 yds. S. of the farm; there are other shafts at 100 yds . W. and 150 yds. N.W. of the farm and the lode appears to have been opened up for 120 fms. S. of the southern shaft, making the total length of development about 275 fms. The mine is said to have been 47 fms. deep in 1870.