Found in the course of Qualtrough research

From 1880 US Federal Cunsus for:
State Nevada
County Eureka
Township Sierra Cannon (Canyon?)
Film# LDS/FHL 1254758
Page 169? (37)
Dwelling# 615
Family# 615

All were white, males, single, employees, miners, bn IOM with parents bn IOM

Qualtrough, Jack age 37,
Corrin, T age 28,
Corkhill, age 21
Callows [sic] John age 20
Gill, Thomas age 30
Croghan, John age 33
Corkhill, J.J. age 35

Elizabeth, Australia.