Home Video Disassembling Bertha: A peek inside the SR 99 tunneling machine (May-June 2017) Video Disassembling Bertha: A peek inside the SR 99 tunneling machine (May-June 2017) June 15, 2017 Facebook Twitter WhatsApp Linkedin ReddIt Email The inner-workings of the SR 99 (Seattle, Puget Sound) tunneling machine Bertha are now fully visibThank you for your interest in The Registry. You must Subscribe or Log In to read the rest of this content.
