The name Bertha, after Seattle's first female mayor, , was chosen by a panel (that included the Governor and Transportation Secretary) from 150 submissions from kindergarten through 12th graders, who were asked to submit female names with Washington state heritage. The winning entry, which was submitted by two elementary schools in and , was selected in December 2012.
[pdf] Compared with the drill and blast method, TBM tunnelling has significant advantages with high construction efficiency, low project cost, conducive to environmental protection, favorable stability contr.
[pdf] On our online portal My Sandvik you can easily find parts prices and availability. You can also place orders or request quotations any time, any day. You can request a quote directly here on our web site. Specify which type of products you're interested in and we'll get back to you as soon as possible.
[pdf] 
