Endeavour acquired its first and highest grade silver mine, Guanacevi, in 2004, located in the 5th largest historic silver mining district in Mexico. Endeavour discovered the first high grade orebody at Porvenir Norte in 2004 and commenced production in 2005. The mines were developed using mechanized, underground, ramp access and the plant was expanded 100% to a 1200 tpd capacity. The Company ultimately found a total of seven new orebodies, has mined out three orebodies, is currently mining two orebodies at Porvenir Norte and Santa Cruz, while developing the Milache and the Santa Cruz Sur orebodies for improved production in 2019.
| Location |
260 km northwest of Durango City |
| Access |
Paved state highway |
| Property |
4,200 hectares |
| Infrastructure |
Near Guanacevi, a town of 2000 people, connected on power grid, readily available water and labour in Guanaceví |
| Mine |
Underground, ramp access, mechanized long hole & cut-and-fill mining methods |
| Plant |
1,200 tonnes per day (tpd) capacity, agitated leach, Merrill Crowe to produce dore bars, currently operating around 8-900 tpd |
| District |
Large, multi-vein silver-rich historic district 10 km long by 5 km wide |
| Resources |
Seven low sulfidation epithermal vein deposits found along Santa Cruz ore-bearing vein structure |
| Widths |
1-5m, average 3m |
| Workforce |
490 employees |