UXO Site selected: Taghee National Forest, ID

General Area: Island Park, ID

Site Type/Program: RCWM sites (Non-stockpile)

Location: Targhee National Forest is located approximately 25 miles west of Yellowstone National Park on the Idaho, Wyoming, and Montana borders.

Brief History:

In 1943, the Dugway Proving Ground Mobile Unit conducted tests in the Targhee National Forest to determine the behavior of nonpersistent chemical agents when released from bombs adjacent to a forest. The types of munitions used in the tests were aerial bombs, notably the M47Al. Also, 500- and 1 OOO-pound T2 bombs were used. Each munition was filled with Phosgene (CG) and nitrous oxide (NO,)‘.

The tests were conducted in the vicinity of Pond’s Lodge, Island Park, Idaho. Four target areas were selected and tests were conducted as follows:

Tom Creek Meadow: Six tests with M47Al bombs, explosively loaded and filled with CG and NO,.

Bio Sorinas Forest: Four tests with M47Al and T2 bombs, explosively loaded and filled with CG and NO,; one test with a IOOO-pound T2 bomb, explosively loaded and filled with CG and NO,.

Black Canvon: Nine tests with M47Al and TZ bombs, explosively loaded with NO, and filled with NO, and CG.

Moose Creek Plateau: Five tests with M47A2 bombs, filled with NO, and CG.

The bombs used in these tests were functioned statically with the bomb body buried 5 to 6 inches in the ground. Operations reports indicate that the Chemical Warfare Service carefully inventoried and accounted for materials used in the tests.



Range / Site Description:

The suspect RCWM area known as Ponds Lodge is approximately 200,000 to 250,000 acres. The area is a Formerly Used Defense Site that was part of Dugway Mobile Unit activities. The area was used to simulate the climate and terrain found in Italy. The tests involved static detonations of 25 partially buried aerial bombs of various sizes (up to 1000 pounds), filled with nonpersistent gas (CG or NO,)*.

According to the PM-Nonstockpile report, the site is a small quantity explosive site classified as a "5 - No Further Action" site.



Associated Munitions: Aerial bombs - M47A1 and T2 - phosgene and nitrous oxide filled.

Activities Completed: An Archives Search Report completed in September 1993 concluded that there does not appear to be any chemical warfare materiel remaining at this location.

Issues:

Other Information:

According to the PM-Nonstockpile report, the site is a small quantity explosive site classified as a "5 - No Further Action" site.



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