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One-Million-Liter Test Sphere

Biological warfare facilitiesBuildings and structures in Frederick County, MarylandClosed medical research facilities of the United States ArmyFort DetrickGovernment buildings completed in 1950
Military facilities on the National Register of Historic Places in MarylandNational Register of Historic Places in Frederick County, MarylandUnited States biological weapons program
1 million liter sphere Fort Detrick
1 million liter sphere Fort Detrick

The One-Million-Liter Test Sphere—also known as the Test Sphere, the Horton Test Sphere, the Cloud Study Chamber, Building 527, and the "Eight Ball" (or "8-ball")—is a decommissioned biological warfare (BW) chamber and testing facility located on Fort Detrick, Maryland, US. It was constructed and utilized by the U.S. Army Biological Warfare Laboratories as part of its BW research program from 1951 to 1969. It is the largest aerobiology chamber ever constructed and was placed on the National Register of Historic Places in 1977.

Excerpt from the Wikipedia article One-Million-Liter Test Sphere (License: CC BY-SA 3.0, Authors, Images).

One-Million-Liter Test Sphere
Brüttemer Fussweg, Winterthur Töss

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Latitude Longitude
N 39.434266666667 ° E -77.429033333333 °
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Address

Burgstelle Buch (Schlösslibuck)

Brüttemer Fussweg
8311 Winterthur, Töss
Zürich, Schweiz
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1 million liter sphere Fort Detrick
1 million liter sphere Fort Detrick
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