...rdan, Robbins and Barrie Willis, iPS
TBM maintenance: it’s one of the most importa...deserves. Experience shows, however, that maintenance plays just as much a part in...case studies of both optimal and suboptimal maintenance and operation of TBMs. Subop...
Lack of regular maintenance
https://www.outtherecolorado.com/water-damage-shuts-down-lane-in-eisenhower-tunnel-for-extended-period/