Argentina is experiencing a new wave of mining investment, particularly in copper, while Chile seeks to capture more of the economic activity linked to those projects. File Photo by Mario Ruiz/EPA

SANTIAGO, Chile, July 10 (UPI) -- Chile and Argentina have revived a nearly three-decade-old treaty to develop mining projects along their shared border, with planned investments that exceed $20.7 billion.

The proximity of Argentine mining deposits to Chile's northern mining regions could support the expansion of ports, highways, railways and international trade corridors. The agreement also could create new opportunities for companies that provide goods and services to the mining industry.

Officials from the mining and foreign affairs ministries of both countries met this week in Buenos Aires to relaunch the bilateral agreement, which was originally signed in 1997.

The move comes as Argentina experiences a new wave of mining investment, particularly in copper, while Chile seeks to capture more of the economic activity linked to those projects.