#98-21 OMS-3217-AA-GS/DW Tricon of Washington, D.C.
Date
Thursday, April 02,1998
Document type
Document Sub-type
Upcoming Meeting
April 24, 2023
Monday 9:00 AM
Her name is Mary and she’s a tunnel boring machine (TBM) capable of cutting through hard rock and boring a tunnel 21 feet in width.