Share this article PORTLAND, Ore., Feb. 9, 2021 /PRNewswire/ -- Allied Market Research published a report, titled, " Tunnel Boring Machine Market by Machine Type (Slurry TBM, Earth Pressure Balance Shield TBM, Shielded TBM, Multi-Mode TBM, and Others), Geology Type (Soft Ground, Hard Rock Ground, Heterogeneous Ground, and Variable Ground), and End User (Road Transport, Railway Transport, Metro & Transit, Utilities, Mining, Oil & Gas, and Others): Global Opportunity Analysis and Industry Forecast, 2020–2027." According to the report, the global tunnel boring machine industry was estimated at $5.47 billion in 2019 and is anticipated to hit $7.55 billion by 2027, registering a CAGR of 6.0% from 2020 to 2027. Drivers, restraints, and opportunities-