Plenty of back-up – The SR 99 tunnel boring machine gets longer
The SR 99 tunnel boring machine’s trailing gear takes shape in Japan in fall 2012. The trailing gear will house the various support systems that crews need to keep the machine operating smoothly as it tunnels through the earth. The machine, including the trailing gear, will be about 326 feet long. Tunneling starts in summer 2013. Learn more about Bertha, the SR 99 tunneling machine, at her webpage or follow her on Twitter @BerthaDigsSR99.
Plenty of back-up – The SR 99 tunnel boring machine gets longer
The SR 99 tunnel boring machine’s trailing gear takes shape in Japan in fall 2012. The trailing gear will house the various support systems that crews need to keep the machine operating smoothly as it tunnels through the earth. The machine, including the trailing gear, will be about 326 feet long. Tunneling starts in summer 2013. Learn more about Bertha, the SR 99 tunneling machine, at her webpage or follow her on Twitter @BerthaDigsSR99.