After uranium was discovered in the Beaverlodge District in 1946,[7]Eldorado Mining and Refining established Eldorado as a community to house its miners, their families, and related workers.[8] By 1951, the community of Eldorado had a population of 184.[1]
Eldorado Mining and Refining opened the Beaverlodge Mine in 1953.[9] The Eldorado Company's major production came from the Fay-Ace-Verna mine shafts, mostly from uranium deposits located in the Archaen Tazin Group.[7] The deposits are found within the footwall and hanging wall of the St. Louis fault.[7][10]
Eldorado had a one-room school that taught students through to grade six, after which they were transported to Uranium City.[8] The first post office was established in 1953 with John Edgar Hamlin as postmaster.[11] The community grew to a population of 939 by 1956.[1]
After the decline of Eldorado's population to 229 in 1981,[6] the Beaverlodge Mine shut down in 1982.[9] The post office closed July 20, 1982, with May A. Grona as the last postmaster.[11]
Climate
Climate data for Eldorado
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year
Mean daily maximum °C (°F)
−21 (−5)
−16 (3)
−8 (17)
3 (37)
12 (53)
18 (64)
21 (69)
19 (66)
11 (51)
3 (37)
−7 (19)
−17 (1)
2 (34)
Daily mean °C (°F)
−26 (−14)
−22 (−7)
−14 (6)
−3 (26)
6 (42)
13 (55)
16 (60)
14 (57)
7 (44)
0 (32)
−11 (12)
−22 (−7)
−3 (26)
Mean daily minimum °C (°F)
−31 (−23)
−28 (−18)
−21 (−5)
−9 (15)
0 (32)
7 (44)
10 (50)
9 (48)
3 (37)
−2 (28)
−15 (5)
−26 (−14)
−9 (17)
Source: weatherbase
Transportation
Eldorado had its own air service of DC-3s and DC-4s, which supplemented commercial air service by Pacific Western Airlines.[8] Air was the accepted mode of travel to and from Eldorado and Uranium City.[8]
^"Population of unincorporated places of 50 persons and over, Alberta, 1961 and 1956". 1961 Census of Canada: Population(PDF). Series SP: Unincorporated Villages. Vol. Bulletin SP—4. Ottawa: Dominion Bureau of Statistics. April 18, 1963. Retrieved November 28, 2021.
^"Population of unincorporated places of 50 persons and over, 1966 and 1961 (Alberta)". Census of Canada 1966: Population(PDF). Special Bulletin: Unincorporated Places. Vol. Bulletin S–3. Ottawa: Dominion Bureau of Statistics. August 1968. Retrieved November 28, 2021.
^"Population of Unincorporated Places of 50 persons and over, 1971 and 1966 (Alberta)". 1971 Census of Canada: Population(PDF). Special Bulletin: Unincorporated Settlements. Vol. Bulletin SP—1. Ottawa: Statistics Canada. March 1973. Retrieved November 28, 2021.
^"Geographical Identification and Population for Unincorporated Places of 25 persons and over, 1971 and 1976". 1976 Census of Canada(PDF). Supplementary Bulletins: Geographic and Demographic (Population of Unincorporated Places—Canada). Vol. Bulletin 8SG.1. Ottawa: Statistics Canada. May 1978. Retrieved November 28, 2021.
^ ab1981 Census of Canada(PDF). Place name reference list. Vol. Western provinces and the Territories. Ottawa: Statistics Canada. May 1983. Retrieved November 28, 2021.
^ abcNash, J. Thomas (1981). Geology and genesis of major world hardrock uranium deposits: An overview, USGS Open-File Report 81-166. US Government. pp. 61–66.
^Lang, A.H. (1956). Record of Proceedings of Session 6B, Panel Discussion on Uranium and Thorium Occurrences, Peaceful Uses of Atomic Energy, Vol. 6, Geology of Uranium and Thorium. New York: United Nations. pp. 646–647.