Indeed Robbins invented the TBM. And then stopped right there. What innovation worth mentioning did Robbins achieve since 60s last century? The sad fact is, I cannot think of any. And for the Japanese, they made tremendous innovations in slurry technology field and also in big diameter TBM technologies.
Indeed Robbins invented the TBM. And then stopped right there. What innovation worth mentioning did Robbins achieve since 60s last century? The sad fact is, I cannot think of any. And for the Japanese, they made tremendous innovations in slurry technology field and also in big diameter TBM technologies.