Summary
Highlights
Rare Earth Elements are essential for modern technology, from cars to precision-guided missiles. China holds a near-monopoly on their mining and processing (90%), which it used to disrupt global supply in 2010. The US, which pioneered the industry at Mountain Pass, California, allowed its operations to decline, giving China an advantage due to lower labor costs and fewer environmental regulations.
Rare Earth Elements, though not rare in occurrence, are difficult and environmentally damaging to extract. They possess unique properties: europium enhances TV colors, erbium amplifies light in fiber optics, gadolinium is used in MRIs, and neodymium creates powerful magnets crucial for various devices, including cell phones, electric cars, and defense systems like the F-35 fighter jet. The US is now heavily dependent on China for these essential materials, impacting national security.
After the Mountain Pass mine closure in 1998 due to environmental issues, China invested heavily in the rare earth industry, ignoring environmental consequences, leading to severe pollution in areas like Baotou. China acquired US magnet technology, further solidifying its dominance. A 2010 incident where China halted rare earth shipments to Japan following a territorial dispute served as a wake-up call for the US, leading to a WTO complaint against China. However, US companies and government agencies remain hesitant to openly discuss the dependency on China.
Trillions of potato-sized nodules, rich in valuable metals like nickel, cobalt, and rare earth elements, lie on the Pacific Ocean floor. These resources are critical for modern technology, including electric cars and supercomputers. While 19 countries, including China and Russia, are actively pursuing deep-sea mining, the United States remains on the sidelines due to its failure to ratify the UN's Law of the Sea treaty.
Deep Green Metals, a Canadian company, is leading efforts to explore and potentially harvest these nodules. Their research vessel, the MK Launcher, conducts surveys and retrieves samples from the Clarion-Clipperton Zone (CCZ), a vast area between Hawaii and Mexico. The nodules are seen as a vital solution for future battery production, and the company views deep-sea 'harvesting' as less invasive than land-based mining.
Advanced robots like Patania, developed by Belgium's Global Sea Mineral Resources (GSR), are designed to collect nodules from the seafloor. However, the deep-sea environment presents significant technical challenges. Scientists like Craig Smith from the University of Hawaii express concerns about the potential ecological impact of deep-sea mining on largely unexplored ecosystems, likening it to strip mining on land.
The US's failure to ratify the UN Law of the Sea treaty means it cannot secure licenses for deep-sea mining and has no voice in regulations. This allows China to dominate the new frontier, holding the most concessions in the CCZ. Former diplomats and military leaders, like Ambassador John Negroponte, warn that this absence poses a significant national security risk, as China could further control critical mineral supplies and leverage deep-sea technology for military purposes.
Despite broad support from various sectors, including the military and businesses, the Law of the Sea treaty has repeatedly failed to pass in the US Senate, primarily due to ideological opposition from some Republican senators who fear a loss of sovereignty. This stance leaves US companies without legal guarantees and hinders their participation, while China continues to advance its deep-sea ambitions, potentially giving it a dual advantage in resource control and maritime power.
The Moab Khotsong gold mine in South Africa extends nearly 2 miles underground, representing some of the deepest human-made holes on Earth. Miners endure extreme conditions, including high temperatures and long commutes through underground tunnels, to extract gold from narrow veins. The gold is processed on site, showcasing a demanding and historically significant industry.
Beyond gold, these mines have become sites for scientific discovery. Geoscientists, like Tullis Onstott and Gaetan Borgonie, are searching for 'extreme life' buried deep within the rock. They have found ancient water, potentially BILLIONS of years old, and discovered entirely new species, such as the 'devil worm,' that thrive in the harsh, sunless environment. This research, partially funded by NASA, offers insights into the potential for life in extreme conditions, including on other planets like Mars.
South African gold mining has a complex and often painful history, deeply intertwined with apartheid and its legacy of underpaid labor and dangerous conditions. While safety has improved and the workforce diversified, the industry faces an uncertain future. The gold mines are becoming so deep and costly to operate that their economic viability is declining, signaling the nearing end of an era for ultra-deep gold mining in South Africa.