File:1962. Virgil Allen testing Dynafog Model 70 fog machine used for pest control. Machine has jet engine and disseminates only oil-based material. Shelton Ranger District, Olympic National Forest, Washington. (34349524876).jpg
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current | 23:59, 3 May 2018 | 2,069 × 1,391 (340 KB) | MechQuester | Transferred from Flickr via #flickr2commons |
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