1. Extracting crude oil normally starts with drilling wells into an underground reservoir . 2. Ground water near Round Top Mountain is available through natural underground reservoirs . 3. A particular concern expressed was that the underground reservoir might trigger earthquakes. 4. The the asteroid Vesta, leading to speculation of underground reservoirs of water-ice. 5. The Pines Barrens host an underground reservoir of pure, untapped water. 6. INJECTION WELLS restore what's left of the geothermal liquid to the underground reservoirs . 7. :For the most part, it is sucked up from underground reservoirs using large pumps. 8. Metamorpho is Sahara Desert to help resolve a military conflict, over an underground reservoir . 9. The migrating fossil fuels collect biological remnants before becoming trapped in deep underground reservoirs . 10. Methods for mapping underground reservoirs have improved the odds of a strike, promoting new production.