Why They Dug the World’s Biggest Hole | Half as Interesting

The Gist

The Bingham Canyon Mine in Utah was dug continuously for 119 years to extract copper. It is the largest man-made excavation in the world, measuring three-quarters of a mile deep and two and a half miles wide.

Quick Overview

The Bingham Canyon Mine in Utah is the largest man-made excavation on Earth, functioning for over a century to extract massive amounts of copper ore. Extracting the mineral requires drilling and blasting 100,000 tons of rock at a time, creating a massive terraced pit that is visible from space. Although the operation generates vast amounts of copper and economic value, it also produces severe environmental hazards like acid-leaking pyrite waste.

Key Points: The Bingham Canyon Mine in Utah is three-quarters of a mile deep and two and a half miles wide. The 21 different mining operations in the region consolidated over time into one massive company and one giant hole. Miners drill 55-foot holes and use explosives to blast roughly 100,000 tons of rock per day. The pit is dug in concentric rings called benches, which are designed to maximize ore collection without causing structural collapse. In 2013, a massive landslide caused 1.5 billion dollars in damage and destroyed three of the four operational rope shovels. Pyrite, a mineral found in abundance at the site, reacts with air and water to produce sulfuric acid, creating severe environmental challenges. Climatize operates as an SEC-registered platform allowing individuals to invest in clean energy projects.

Context: Humanity has spent centuries digging massive holes into the Earth for resource extraction. While most major mining operations eventually close or merge, the Bingham Canyon Mine in Utah stands out as the ultimate mega-excavation, operating continuously for over a century to supply global copper demand.

Detailed Analysis

The Bingham Canyon Mine in Utah stands as the largest man-made excavation on Earth, spanning three-quarters of a mile deep and two and a half miles wide. Originally home to 21 separate mining operations, the area consolidated into a single massive enterprise over decades of digging. Extracting copper from the site requires a meticulous process of drilling 55-foot holes, packing them with explosives, and blasting roughly 100,000 tons of rock at a time. The pit is dug in concentric rings called benches, meticulously engineered to maximize ore recovery while preventing catastrophic landslides. However, maintaining these steep angles carries severe risks, as evidenced by a massive 2013 landslide that caused 1.5 billion dollars in damage and destroyed three massive rope shovels. Beyond the logistical challenges, the mine generates severe environmental hazards. Pyrite makes up a large portion of the extracted rock, and when exposed to air and water, it produces sulfuric acid. This acid runoff, combined with other heavy metals, has placed Utah near the top of toxic chemical release lists. Despite the environmental toll and the immense cost of maintaining operations, the mine remains profitable because its advanced infrastructure and existing setup make it cheaper to operate than digging a new hole from scratch.