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51 Avalanche lines drawn on a photo of Alta.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; 1969Image
52 Avalanche map1940; 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; 1969Image
53 Avalanche monitoring equipment1940; 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; 1969Image
54 Avalanche monitoring equipment1940; 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; 1969Image
55 Avalanche monitoring equipment1940; 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; 1969Image
56 Avalanche monitoring equipment1940; 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; 1969Image
57 Avalanche monitoring equipment1940; 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; 1969Image
58 Avalanche occuring on Mt. Superior.1966-02Image
59 Avalanche occuring on Mt. Superior.1966-02Image
60 Avalanche occuring on Mt. Superior.1966-02Image
61 Avalanche projectile ramp test.1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989Image
62 Avalanche projectile ramp test.1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989Image
63 Avalanche projectile ramp test.1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989Image
64 Avalanche projectile ramp test.1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989Image
65 Avalanche projectile ramp test.1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989Image
66 Avalanche Research Center, Alta, Utah1964Image
67 Avalanche school in parking lot.1969Image
68 Avalanche school on ridge line1969Image
69 Avalanche school on ridge line1969Image
70 Avalanche school participants back-country skiing.1969Image
71 Avalanche school participants back-country skiing.1969Image
72 Avalanche school participants learning avalanche search and rescue.1959Image
73 Avalanche school participants learning avalanche search and rescue.1959Image
74 Avalanche school participants learning avalanche search and rescue.1939Image
75 Avalanche school role playing an avalanche rescue [1]1967-02Image
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