Mineral exploration: the steel bought before the mine exists

October 19, 2026  ·  Indumor

What gets fabricated for a mine that does not exist yet? Far more than you would think. Before there is a pit, a plant or concentrate, there is an exploration campaign: drill rigs working in remote places, over short seasons, to find out whether the deposit is worth it. And that campaign needs steel. Here it is in three stages.

Before the campaign

In the high Andes, campaigns concentrate in the summer season, when roads are open, and everything must be ready before it starts. That includes the camp — modules, bases, walkways, water and fuel tanks — and the infrastructure for the rigs: skids for generators and pumps, platforms to place equipment on sloping ground and double-wall diesel tanks that meet environmental requirements. To see how that small town comes together, read mining camps.

During the campaign

A drill rig consumes water and fuel all day. It needs water tanks and systems to handle the mud and water returning from the hole, drip trays under rigs and generators, and supports for water lines. Everything works outdoors and moves from one drill pad to the next, so it has to be rugged and easy to relocate. On steep slopes, leveled platforms are sometimes built to set the rig on, with their own access and railings. There is no room to improvise: whoever arrives with a half-finished tank loses days of a season that waits for no one.

After the campaign

The product of exploration is core: the rock cylinders that come out of the hole and are stored in boxes, meter by meter, for years. That calls for core sheds with wide-span structures, racks to stack thousands of boxes in an orderly, safe way, logging tables to describe them and areas to saw and sample them. At season’s end the camp is taken down, the damage repaired and everything stored for next time.

Exploration has its irony: a lot of steel gets spent searching for a deposit that may never show up. That is why everything built must come apart, load up and serve the next campaign, on the same project or another. Projects like those in Mendoza’s Malargüe exploration district, covered in mining in Mendoza, live on that cycle.

Starting a campaign next season? Tell us where and with how many rigs: at Indumor we will tell you what is worth having built before the road opens — in English.

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