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] The was developed by Sir to excavate the in 1825. However, this was only the invention of the shield concept and did not involve the construction of a complete tunnel boring machine, the digging still having to be accomplished by the then standard excavation methods.
[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.
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