How NASA Helped 'The 33' Chilean Miners
In 2010, all eyes were on 33 miners trapped for more than two months under the stone walls of a Chilean copper mine as the world watched and hoped for their safe rescue. Men and women from all over the world provided aid as the Chilean government sought assistance from other organizations for how to help the trapped miners.
Among them was a team from NASA who provided insight from the agency’s long experience protecting humans in the hostile environment of space. The International Space Station is a blueprint for global cooperation to address challenging endeavors. NASA's initial support for “The 33” included recommendations on medical care, nutrition, and psychological support. The support was broadened to include recommendations on the design of a Chilean vehicle used to extract the miners. Consultations continued between members of the NASA team and Chilean government officials until the miners were rescued, October 13, 2010.
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NASA To The Rescue
In 2010, all eyes were on 33 miners trapped for more than two months under the stone walls of a Chilean copper mine as the world watched and hoped for their safe rescue.
Men and women from all over the world provided aid as the Chilean government sought assistance from other organizations for how to help the trapped miners.
Among them was a team from NASA who provided insight from the agency’s long experience protecting humans in the hostile environment of space. The International Space Station is a blueprint for global cooperation to address challenging endeavors.
Credits: Cecilia Penafiel, U.S. Embassy in Chile.
NASA Engineering and Safety Center Principal Engineer Clint Cragg (right) consults with Rene Aguilar (left), deputy chief of rescue operations for the Chilean mine disaster.
Engineering & Safety Center
NASA's initial support for “The 33” included recommendations on medical care, nutrition, and psychological support.
The support was broadened to include recommendations on the design of a Chilean vehicle used to extract the miners. Consultations continued between members of the NASA team and Chilean government officials until the miners were rescued, October 13, 2010.
NASA engaged the NASA Engineering and Safety Center (NESC), a task force of engineering experts from its 10 agency centers and partner organizations that can be ready at a moment’s notice. Clinton H. Cragg, a principal engineer for the NESC located at NASA’s Langley Research Center, put together a team to plan through various scenarios based on what little initial information they could get at the time.
A Very Prepared Team
NASA assembled a team of doctors and nutritionists to speak with the Chilean Minister of Health, Dr. Jaime Mañalich, over the phone.
Among them were Dr. J. Michael Duncan, deputy chief medical officer of the Space Life Sciences Directorate at Johnson Space Center in Houston at the time; Dr. James D. Polk, who was then chief of the Space Medicine Division at Johnson; Dr. Albert W. Holland, an operational psychologist with a long history of supporting astronauts on long duration space missions aboard both Mir and the International Space Station; and Sara R. Zwart, Barbara L. Rice, and Holly A. Dlouhy, members of Johnson’s nutritional group, who advised on how best to re-feed the starving miners.
Credits: NASA/Carla Cioffi
From Left: Then-NASA Deputy Administrator Lori Garver, Dr. Clint Cragg, Dr. Michael Duncan, Dr. Albert Holland, Dr. James Polk, Albert Condes and NASA Administrator Charles Bolden.
An Onsite Visit
Once it was determined that on-site evaluation was needed, Cragg, Duncan, Polk, and Holland worked within NASA and with the State Department and the Chilean Space Agency to organize a trip to Chile.
The team spent three days at the rescue site assessing the parallels between the miner’s plight and life in space. After the onsite visit, NASA continued consulting remotely from the U.S.
Working With Remote Patients
Dr. Duncan and Dr. Polk were no strangers to providing medical advice to patients in remote locations after working with astronauts living aboard the space station, 250 miles above the Earth’s surface.
Their advice included:
• Recommending methods for replacing Vitamin D since the miners, much like astronauts confined to a space station, were without direct sunlight and thus at risk for Vitamin D deficiency.
• Encouraging moderate exercise to increase the miners’ muscle contractility and help prepare their bodies for the stress of the rescue mission.
• Changing diet to reduce oxygen consumption and carbon dioxide production in an enclosed space, something NASA had studied for the space shuttle. In addition to getting enough essential vitamins and nutrients, NASA recommended optimum amounts of overall caloric intake, proteins, carbohydrates and fats for efficient respiration.
• Maintaining a proper sleep schedule, which is key for mood and social stability.
• Providing eye protection for the miners’ return to the surface. After months without sunlight, NASA recommended sunglasses with protection for ultraviolet radiation A and B that were also temper-resistant as a safeguard against falling rock or debris.
• Regulating body temperature. NASA recommended the miners wear sweaters and jackets during the rescue to help them adjust from the hot temperatures underground to the cold temperatures above the surface.
• Using methods to maintain blood pressure to ensure miners did not pass out during the rescue operation. To prepare astronauts’ bodies for adjusting from weightlessness in space to Earth’s gravity during landing, NASA focuses on proper hydration, loading the body with extra salts and electrolytes, and wearing pressure garments.
Sleeping in close quarters during NASA's underwater NEEMO mission
Importance Of Mental Health
NASA psychologists are experts in keeping people mentally healthy in small, secluded spaces like the space station and NEEMO.
Some of the recommendations they made included:
• Limiting media access to the miners and their families during and after this difficult time.
• Coping with isolation from the outside world, something astronauts on long duration missions face.
• Counseling the miners’ families through being away from their loved one and adjusting back to their return after the rescue.
• Communicating with friends and family through regularly scheduled times each week. Keeping in touch with loved ones is an important part of astronauts’ well-being.
• Managing group dynamics, as tensions can run high with too many people in a small, enclosed space, and NASA has experience getting people from many different cultures to work together on the International Space Station.
Designing A Rescue Capsule
NASA also worked with a number of engineers from the Chilean Navy and others who were studying how to design a rescue capsule for the miners.
Cragg put together a team of engineers from across NASA who offered about 75 suggested features, most of which were put into place, for the design of the capsule that would rescue the miners.
NASA recommended the capsule be built to fit a single miner, which had a large part in its 13-foot, 926-pound design. A single miner could easily get himself in and secured without assistance.
For the capsule itself, NASA engineers recommended exterior rollers and a trap door in the bottom.
Credits: Hugo Infante/Government of Chile
Rescue workers practice a dry run with one of the capsules that was used to liberate the trapped miners.
The Suggestions For The Capsule
The rollers would cushion the ride up, reduce friction with tunnel walls, and lessen the possibility the capsule would get stuck midway,
while the trap door allowed the rider to exit the capsule through the bottom and repel back down in case it got stuck midway. A twin capsule was built to enable teams to work through engineering problems that might occur during the rescue.
To ensure the miner’s health on the way up, engineers provided other ideas, including an oxygen tank for an emergency air supply, an audio/video feed for communication with the rider during the transit, and medical probes like heart monitors so rescue teams could check vital signs during the rescue.
Credits: Hugo Infante/Government of Chile
Relief & Celebration
Mario Sepulveda, the second miner to leave the San Jose mine with the Phoenix rescue capsule, wears sunglasses to protect his eyes from the bright lights on the surface.
For more details about NASA’s assistance to the Chilean government, listen to NASA team members discuss "The 33." The aid that Duncan, Polk, Holland, Cragg and many others at NASA provided to rescue the Chilean miners is just one example of the many ways the agency helps to benefit humanity.