Silo headworks collar (Cold War Missile Silo and Command Bunker)
The reinforced concrete headworks around the tube bore at grade: a round apron, a raised curb with a steel closure seat, twin door track plinths with rolled rails, anchor blocks, a cable duct, a hinged personnel hatch and a lightning mast.
- 格式
- GLB
- 文件大小
- 63 KB
- 三角面
- 1,244
- 许可
- CC0 1.0