Title | Date | Type | ||
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226 |
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Terminus of the Argenta avalanche slide. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
227 |
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Testing snow penetration using a penetrometer at Alta. Foreground, Dick Stillman of Berthoud Pass, Co. | 1955-01 | Image |
228 |
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U.S. Army -- Dugway Proving Grounds -- coop with the Wasatch National Forest Service in testing the 4-2 mortar. | 1966-03 | Image |
229 |
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U.S. Army -- Dugway Proving Grounds -- coop with the Wasatch National Forest Service in testing the 4-2 mortar. | 1966-03 | Image |
230 |
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U.S. Army -- Dugway Proving Grounds -- coop with the Wasatch National Forest Service in testing the 4-2 mortar. | 1966-03 | Image |
231 |
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U.S. Army -- Dugway Proving Grounds -- coop with the Wasatch National Forest Service in testing the 4-2 mortar. | 1966-03 | Image |
232 |
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U.S. Army -- Dugway Proving Grounds -- coop with the Wasatch National Forest Service in testing the 4-2 mortar. | 1966-03 | Image |
233 |
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U.S. Army -- Dugway Proving Grounds -- coop with the Wasatch National Forest Service in testing the 4-2 mortar. | 1966-03 | Image |
234 |
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U.S. Army and U.S. Forest Service cooperate in testing the 75mm recoilless rifle used in avalanche control. | 1963 | Image |
235 |
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U.S. Army and U.S. Forest Service employees gathered around the 105mm recoilless rifle. | 1956 | Image |
236 |
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Unidentified avalanche | 1939 | Image |
237 |
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Vehicles hit by an avalanche | 1964 | Image |
238 |
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Vehicles hit by an avalanche | 1964 | Image |
239 |
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Vehicles hit by an avalanche | 1964 | Image |
240 |
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View of cornice fencing during the spring/summer. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
241 |
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View of cornice fencing during the spring/summer. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
242 |
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View of cornice fencing during the spring/summer. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
243 |
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View of cornice fencing during the spring/summer. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
244 |
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Weather chart | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959 | Image |
245 |
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Weather chart | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
246 |
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Weather chart. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
247 |
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Weather chart. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
248 |
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Weather chart. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
249 |
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Weather chart. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |
250 |
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Weather chart. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image |