#### § 79.31 Definitions.

(a) The definitions listed in § 79.11(b), (e), (f), (g), and (h), and in § 79.21, apply to this subpart.

(b) *Atmospheric detonation of a nuclear device* means only a test conducted by the United States prior to January 1, 1963, as listed in paragraph (d) of this section.

(c) *First exposure* or initial exposure means the date on which the claimant first participated onsite in an atmospheric detonation of a nuclear device.

(d) *Period of atmospheric nuclear testing* means one of the periods listed in this paragraph that are associated with each test operation, plus an additional six-month period thereafter:

(1) For Operation Trinity, the period July 16, 1945, through August 6, 1945:

| Event name | Date | Location |
| --- | --- | --- |
| Trinity | 07/16/45 | Trinity Test Site |

(2) For Operation Crossroads, the period June 28, 1946, through August 31, 1946, for all activities other than the decontamination of ships involved in Operation Crossroads; the period of atmospheric nuclear testing for the decontamination of ships involved in Operation Crossroads shall run from June 28, 1946, through November 30, 1946:

| Event name | Date | Location |
| --- | --- | --- |
| Able | 07/01/46 | Bikini |
| Baker | 07/25/46 | Bikini |

(3) For Operation Sandstone, the period April 13, 1948, through May 20, 1948:

| Event name | Date | Location |
| --- | --- | --- |
| X-ray | 04/15/48 | Enewetak |
| Yoke | 05/01/48 | Enewetak |
| Zebra | 05/15/48 | Enewetak |

(4) For Operation Ranger, the period January 27, 1951, through February 7, 1951:

| Event name | Date | Location |
| --- | --- | --- |
| Able | 01/27/51 | Nevada Test Site (“NTS”) |
| Baker | 01/28/51 | NTS |
| Easy | 02/01/51 | NTS |
| Baker-2 | 02/02/51 | NTS |
| Fox | 02/06/51 | NTS |

(5) For Operation Greenhouse, the period April 5, 1951, through June 20, 1951, for all activities other than service as a member of the garrison or maintenance forces on the atoll of Enewetak between June 21, 1951, and July 1, 1952; the period of atmospheric nuclear testing for service as a member of the garrison or maintenance forces on the atoll of Enewetak shall run from April 5, 1951, through July 1, 1952:

| Event name | Date | Location |
| --- | --- | --- |
| Dog | 04/08/51 | Enewetak |
| Easy | 04/21/51 | Enewetak |
| George | 05/09/51 | Enewetak |
| Item | 05/25/51 | Enewetak |

(6) For Operation Buster-Jangle, the period October 22, 1951, through December 20, 1951:

| Event name | Date | Location |
| --- | --- | --- |
| Able | 10/22/51 | NTS |
| Baker | 10/28/51 | NTS |
| Charlie | 10/30/51 | NTS |
| Dog | 11/01/51 | NTS |
| Sugar | 11/19/51 | NTS |
| Uncle | 11/29/51 | NTS |

(7) For Operation Tumbler-Snapper, the period April 1, 1952, through June 20, 1952:

| Event name | Date | Location |
| --- | --- | --- |
| Able | 04/01/52 | NTS |
| Baker | 04/15/52 | NTS |
| Charlie | 04/22/52 | NTS |
| Dog | 05/01/52 | NTS |
| Easy | 05/07/52 | NTS |
| Fox | 05/25/52 | NTS |
| George | 06/01/52 | NTS |

(8) For Operation Ivy, the period October 29, 1952, through December 31, 1952:

| Event name | Date | Location |
| --- | --- | --- |
| Mike | 11/01/52 | Enewetak |
| King | 11/16/52 | Enewetak |

(9) For Operation Upshot-Knothole, the period March 17, 1953, through June 20, 1953:

| Event name | Date | Location |
| --- | --- | --- |
| Annie | 03/17/53 | NTS |
| Nancy | 03/24/53 | NTS |
| Ruth | 03/31/53 | NTS |
| Dixie | 04/06/53 | NTS |
| Ray | 04/11/53 | NTS |
| Badger | 04/18/53 | NTS |
| Simon | 04/25/53 | NTS |
| Encore | 05/08/53 | NTS |
| Harry | 05/19/53 | NTS |
| Grable | 05/25/53 | NTS |
| Climax | 06/04/53 | NTS |

(10) For Operation Castle, the period February 27, 1954, through May 31, 1954

| Event name | Date | Location |
| --- | --- | --- |
| Bravo | 03/01/54 | Bikini |
| Romeo | 03/27/54 | Bikini |
| Koon | 04/07/54 | Bikini |
| Union | 04/26/54 | Bikini |
| Yankee | 05/05/54 | Bikini |
| Nectar | 05/14/54 | Enewetak |

(11) For Operation Teapot, the period February 18, 1955, through June 10, 1955:

| Event name | Date | Location |
| --- | --- | --- |
| Wasp | 02/18/55 | NTS |
| Moth | 02/22/55 | NTS |
| Tesla | 03/01/55 | NTS |
| Turk | 03/07/55 | NTS |
| Hornet | 03/12/55 | NTS |
| Bee | 03/22/55 | NTS |
| Ess | 03/23/55 | NTS |
| Apple-1 | 03/29/55 | NTS |
| Wasp Prime | 03/29/55 | NTS |
| Ha | 04/06/55 | NTS |
| Post | 04/09/55 | NTS |
| Met | 04/15/55 | NTS |
| Apple-2 | 05/05/55 | NTS |
| Zucchini | 05/15/55 | NTS |

(12) For Operation Wigwam, the period May 14, 1955, through May 15, 1955:

| Event name | Date | Location |
| --- | --- | --- |
| Wigwam | 05/14/55 | Pacific |

(13) For Operation Redwing, the period May 2, 1956, through August 6, 1956, for all activities other than service as a member of the garrison or maintenance forces on the atoll of Enewetak from August 7, 1956, through August 7, 1957; the period of atmospheric nuclear testing for service as a member of the garrison or maintenance forces on the atoll of Enewetak shall run from May 2, 1956, through August 7, 1957:

| Event name | Date | Location |
| --- | --- | --- |
| Lacrosse | 05/05/56 | Enewetak |
| Cherokee | 05/21/56 | Bikini |
| Zuni | 05/28/56 | Bikini |
| Yuma | 05/28/56 | Enewetak |
| Erie | 05/31/56 | Enewetak |
| Seminole | 06/06/56 | Enewetak |
| Flathead | 06/12/56 | Bikini |
| Blackfoot | 06/12/56 | Enewetak |
| Kickapoo | 06/14/56 | Enewetak |
| Osage | 06/16/56 | Enewetak |
| Inca | 06/22/56 | Enewetak |
| Dakota | 06/26/56 | Bikini |
| Mohawk | 07/03/56 | Enewetak |
| Apache | 07/09/56 | Enewetak |
| Navajo | 07/11/56 | Bikini |
| Tewa | 07/21/56 | Bikini |
| Huron | 07/22/56 | Enewetak |

(14) For Operation Plumbbob, the period May 28, 1957, through October 22, 1957:

| Event name | Date | Location |
| --- | --- | --- |
| Boltzmann | 05/28/57 | NTS |
| Franklin | 06/02/57 | NTS |
| Lassen | 06/05/57 | NTS |
| Wilson | 06/18/57 | NTS |
| Priscilla | 06/24/57 | NTS |
| Hood | 07/05/57 | NTS |
| Diablo | 07/15/57 | NTS |
| John | 07/19/57 | NTS |
| Kepler | 07/24/57 | NTS |
| Owens | 07/25/57 | NTS |
| Stokes | 08/07/57 | NTS |
| Shasta | 08/18/57 | NTS |
| Doppler | 08/23/57 | NTS |
| Franklin Prime | 08/30/57 | NTS |
| Smoky | 08/31/57 | NTS |
| Galileo | 09/02/57 | NTS |
| Wheeler | 09/06/57 | NTS |
| Laplace | 09/08/57 | NTS |
| Fizeau | 09/14/57 | NTS |
| Newton | 09/16/57 | NTS |
| Whitney | 09/23/57 | NTS |
| Charleston | 09/28/57 | NTS |
| Morgan | 10/07/57 | NTS |

(15) For Operation Hardtack I, the period April 26, 1958, through October 31, 1958, for all activities other than service as a member of the garrison or maintenance forces on the atoll of Enewetak from November 1, 1958, through April 30, 1959; the period of atmospheric nuclear testing for service as a member of the garrison or maintenance forces on the atoll of Enewetak shall run from April 26, 1958, through April 30, 1959:

| Event name | Date | Location |
| --- | --- | --- |
| Yucca | 04/28/58 | Pacific |
| Cactus | 05/06/58 | Enewetak |
| Fir | 05/12/58 | Bikini |
| Butternut | 05/12/58 | Enewetak |
| Koa | 05/13/58 | Enewetak |
| Wahoo | 05/16/58 | Enewetak |
| Holly | 05/21/58 | Enewetak |
| Nutmeg | 05/22/58 | Bikini |
| Yellowwood | 05/26/58 | Enewetak |
| Magnolia | 05/27/58 | Enewetak |
| Tobacco | 05/30/58 | Enewetak |
| Sycamore | 05/31/58 | Bikini |
| Rose | 06/03/58 | Enewetak |
| Umbrella | 06/09/58 | Enewetak |
| Maple | 06/11/58 | Bikini |
| Aspen | 06/15/58 | Bikini |
| Walnut | 06/15/58 | Enewetak |
| Linden | 06/18/58 | Enewetak |
| Redwood | 06/28/58 | Bikini |
| Elder | 06/28/58 | Enewetak |
| Oak | 06/29/58 | Enewetak |
| Hickory | 06/29/58 | Bikini |
| Sequoia | 07/02/58 | Enewetak |
| Cedar | 07/03/58 | Bikini |
| Dogwood | 07/06/58 | Enewetak |
| Poplar | 07/12/58 | Bikini |
| Scaevola | 07/14/58 | Enewetak |
| Pisonia | 07/18/58 | Enewetak |
| Juniper | 07/22/58 | Bikini |
| Olive | 07/23/58 | Enewetak |
| Pine | 07/27/58 | Enewetak |
| Teak | 07/31/58 | Johnston Isl |
| Qunice | 08/06/58 | Enewetak |
| Orange | 08/11/58 | Johnston Isl |
| Fig | 08/18/58 | Enewetak |

(16) For Operation Argus, the period August 25, 1958, through September 10, 1958:

| Event name | Date | Location |
| --- | --- | --- |
| Argus I | 08/27/58 | South Atlantic |
| Argus II | 08/30/58 | South Atlantic |
| Argus III | 09/06/58 | South Atlantic |

(17) For Operation Hardtack II, the period September 19, 1958, through October 31, 1958:

| Event name | Date | Location |
| --- | --- | --- |
| Eddy | 09/19/58 | NTS |
| Mora | 09/29/58 | NTS |
| Quay | 10/10/58 | NTS |
| Lea | 10/13/58 | NTS |
| Hamilton | 10/15/58 | NTS |
| Dona Ana | 10/16/58 | NTS |
| Rio Arriba | 10/18/58 | NTS |
| Socorro | 10/22/58 | NTS |
| Wrangell | 10/22/58 | NTS |
| Rushmore | 10/22/58 | NTS |
| Sanford | 10/26/58 | NTS |
| De Baca | 10/26/58 | NTS |
| Humboldt | 10/29/58 | NTS |
| Mazama | 10/29/58 | NTS |
| Santa Fe | 10/30/58 | NTS |

(18) For Operation Dominic I, the period April 23, 1962, through December 31, 1962:

| Event name | Date | Location |
| --- | --- | --- |
| Adobe | 04/25/62 | Christmas Isl |
| Aztec | 04/27/62 | Christmas Isl |
| Arkansas | 05/02/62 | Christmas Isl |
| Questa | 05/04/62 | Christmas Isl |
| Frigate Bird | 05/06/62 | Pacific |
| Yukon | 05/08/62 | Christmas Isl |
| Mesilla | 05/09/62 | Christmas Isl |
| Muskegon | 05/11/62 | Christmas Isl |
| Swordfish | 05/11/62 | Pacific |
| Encino | 05/12/62 | Christmas Isl |
| Swanee | 05/14/62 | Christmas Isl |
| Chetco | 05/19/62 | Christmas Isl |
| Tanana | 05/25/62 | Christmas Isl |
| Nambe | 05/27/62 | Christmas Isl |
| Alma | 06/08/62 | Christmas Isl |
| Truckee | 06/09/62 | Christmas Isl |
| Yeso | 06/10/62 | Christmas Isl |
| Harlem | 06/12/62 | Christmas Isl |
| Rinconada | 06/15/62 | Christmas Isl |
| Dulce | 06/17/62 | Christmas Isl |
| Petit | 06/19/62 | Christmas Isl |
| Otowi | 06/22/62 | Christmas Isl |
| Bighorn | 06/27/62 | Christmas Isl |
| Bluestone | 06/30/62 | Christmas Isl |
| Starfish | 07/08/62 | Johnston Isl |
| Sunset | 07/10/62 | Christmas Isl |
| Pamlico | 07/11/62 | Christmas Isl |
| Androscoggin | 10/02/62 | Johnston Isl |
| Bumping | 10/06/62 | Johnston Isl |
| Chama | 10/18/62 | Johnston Isl |
| Checkmate | 10/19/62 | Johnston Isl |
| Bluegill | 10/25/62 | Johnston Isl |
| Calamity | 10/27/62 | Johnston Isl |
| Housatonic | 10/30/62 | Johnston Isl |
| Kingfish | 11/01/62 | Johnston Isl |
| Tightrope | 11/03/62 | Johnston Isl |

(19) For Operation Dominic II, the period July 7, 1962, through August 15, 1962:

| Event name | Date | Location |
| --- | --- | --- |
| Little Feller II | 07/07/62 | NTS |
| Johnie Boy | 07/11/62 | NTS |
| Small Boy | 07/14/62 | NTS |
| Little Feller I | 07/17/62 | NTS |

(20) For Operation Plowshare, the period July 6, 1962, through July 7, 1962, covering Project Sedan.