Shaft headframe (Underground Mine and Shaft Works)
A four leg braced steel lattice headframe seventeen metres to the sheave deck, with two back legs on concrete pads, a caged access ladder, a handrailed sheave deck and two named sheave wheels carrying head ropes.
- 格式
- GLB
- 文件大小
- 106 KB
- 三角面
- 2,668
- 许可
- CC0 1.0