History tunnels, tunnels in history, indian historyFull description
fire risk metro tunnels stationsFull description
Geotechnical Risk in Rock Tunnels
Useful for rock engineers
A short (quickstart) version of the Tunnels & Trolls rules, including a solo adventure you can play by yourself, and a group adventure you can play with your friends. This is what we gave away on F...
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adventurer's Compendium
Comparison of traditional D&B and other mechanical excavation techniques
