Another Seattle tunnel drill (not Bertha) damaged, needs repair
Sound Transit’s tunnel boring machine, known as Pamela, stalled while digging through hard ground just north of the new University District’s Station in Seattle, Washington. Pamela was stuck for six weeks, and is slowly on the move again after limited repairs. Extensive repairs will take place when Pamela reaches the next underground light rail station in April. Pamela is one of two light rail boring machines, and is one-seventh the size of Bertha, the boring machine on the Highway 99 tunnel project.