This book explores the history, techniques, and materials used in the practice of induced hydraulic fracturing, one of today's hottest topics, for the production of natural gas, while examining the environmental and economic impact.

You can't squeeze blood from a turnip, but you can release trapped natural gas from rock. At least that is what is being accomplished now throughout North America. Natural gas that is primarily methane has been proven to be an excellent fuel source. It can be safely burned to create heat to power engines, boilers in factories and homes as well as powering turbines for generating electricity. Projections on natural gas volumes trapped underground suggest a nearly inexhaustible supply of this product.

Yet with such abundance comes controversy. A popular and economical technique relies on the gas from subterranean sources and requires fracturing rock bed. This process is actually carried out naturally every day with water or magma. Magma may flow into rock beds superheating water to generate steam. The resulting pressure of the expanding water molecules can be so great, it can lift and separate thousands of tons of rock deep beneath the Earth's surface. This same practice can be carried out artificially (induced) using high-powered pumps and various liquid compounds. This technique combined with new horizontal directional drilling machines have enabled the harvest and distribution of natural gas. But at what cost? Does this practice contribute to greenhouse gas? Does it create earthquakes? Does it contaminate the groundwater supply? These are important issues surrounding hydraulic fracturing, and they are covered here in detail.