GUANACEVI MINE

Overview

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 eight new orebodies, and is currently mining three new orebodies at El Curso, Milache and Santa Cruz Sur. During 2020, Guanacevi completed an operational turn-around that returned the mine to profitability after management initiated a number of measures to improve its financial performance.

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
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	500 employees