Twitter Bertha, which claims to be the world's largest diameter TBM, has more than 3,500 followers on Twitter. Related Links: People Dig Tunnel Boring Machines That Tweet Barnhart Modular Lift Tower Positions Seattle TBM Project owners are using social media, such as Twitter, to gain public awareness about their construction work. As such, several tunnel boring machines (TBMs) are carving out some time to share their "observations" with the Twitterverse. We recently held an offline chat with the Tweeting TBMs about their experiences; their answers follow below.ENR: How do you work Tweeting into your busy project schedule?@BerthaDigsSR99: It’s a challenge
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.