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] Incorporated in Australia in 1990, Terratec is the world’s leading designer and manufacturer of Tunnel Boring Machines, Raise Boring Machines and other custom-engineered products for the tunnelling and mining industries, encompassing all ground conditions and boring diameters from 0.6m to 15m.
[pdf] The average cost of a basic borehole drilling machine depends on several factors, including the type of machine, its size, and the brand. The price range for a basic borehole drilling machine can vary significantly. On average, you can expect to pay anywhere from $3,000 to $30,000 for a basic machine.
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