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Repair of Bertha

Workers stand on top of the tunnel-boring machine Bertha, looking down at the ring-shaped cutter drive and bearing that has been exposed to be lifted out and repaired.

Steve Ringman / The Seattle Times

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Filename
145437_bertha_02.JPG
Copyright
The Seattle Times
Image Size
5760x3680 / 6.0MB
Contained in galleries
Around the Northwest
Workers stand on top of the tunnel-boring machine Bertha, looking down at the ring-shaped cutter drive and bearing that has been exposed to be lifted out and repaired.<br /> <br /> Steve Ringman / The Seattle Times