Burning Mine, Summit Hill, Pa. : 無料・フリー素材/写真
Burning Mine, Summit Hill, Pa. / smallcurio
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | "It was only after 1900, over 40 years after the start of the fire, that W.A. Lathop, President of the Lehigh Coal and Navigation Company, came up with the plan that would permanently end the Summit Hill fire. Lathop’s plan called for a 274-m (900 ft)-long clay barrier built from the surface down to the water line. The clay would be supported by two concrete walls, 18 m (60 ft) in height and 3.7 m (12 ft) wide. Each concrete wall had “windows” built in at regular intervals. When wet clay and sediment were poured in, they would seep through on both sides. The material would fill in any voids, preventing the fire from advancing. Lathrop’s plan worked, and by 1910 the fire was extinguished." - Vice, D. H., Aurand, H. J., & Andel, N. M. (2018). The Summit Hill Coal-Mine Fire, Pennsylvania. In Case Studies - Advances in Field and Laboratory Research (Vol. 5, pp. 64-69). Elsevier Science Ltd.. doi.org/10.1016/B978-0-12-849885-9.00004-4 |
| 撮影日 | 2020-12-06 08:18:43 |
| 撮影者 | smallcurio , Austin, TX |
| タグ | |
| 撮影地 | |
| カメラ | NIKON D300S , NIKON CORPORATION |
| 露出 | 0.01 sec (1/100) |
| 開放F値 | f/5.0 |
| 焦点距離 | 50 mm |