: Trinity Site: 1945-1995. A National Historic Landmark White Sands Missile Range New Mexico by White Sands Missile Range N M Public Affairs Office - Manhattan Project (U.S.); Atomic bomb New Mexico Los Alamos Testing History World War II

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Trinity Site: 1945-1995. A National Historic Landmark White Sands Missile Range, New Mexico

Contents:

Radiation at Trinity Site. How to Get to Trinity Site. Trinity Site National Historic Landmark. The Manhattan Project. The Theory. Building a test site. Jumbo. Bomb Assembly. The test. After the explosion. It's the Schmidt house. Afterwards. White Sands Missile Range. Reading List.

"The effects could well be called unprecedented, magnificent, beautiful, stupendous, and terrifying. No man-made phenomenon of such tremendous power had ever occurred before. The lighting effects beggared description. The whole country was lighted by a searing light with the intensity many times that of the midday sun."

Brig. Gen. Thomas Farrell

Radiation at Trinity Site

In deciding whether to visit ground zero at Trinity Site, the following information may prove helpful to you.

Radiation levels in the fenced, ground zero area are low. On an average the levels are only 10 times greater than the region's natural background radiation. A one-hour visit to the inner fenced area will result in a whole body exposure of one-half to one milliroentgen.

To put this in perspective, a U.S. adult receives an average exposure of 90 milliroentgens every year from natural and medical sources. For instance, the Department of Energy says we receive between 35 and 50 milliroentgens every year from the sun and from 20 to 35 milliroentgens every year from our food. Living in a brick house adds 50 milliroentgens of exposure every year compared to living in a frame house. Finally, flying coast to coast in a jet airliner gives an exposure of between three and five milliroentgens on each trip.

Although radiation levels are low, some feel any extra exposure should be avoided. The decision is yours. It should be noted that small children and pregnant women are potentially more at risk than the rest of the population and are generally considered groups who should only receive exposure in conjunction with medical diagnosis and treatment. Again, the choice is yours.

At ground zero, Trinitite, the green, glassy substance found in the area, is still radioactive and must not be picked up.

Typical radiation exposures for Americans Per The National Council on Radiation Protection

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