The identical twin TBMs weighed-in at 750 tons each and were affectionately named Mom Chung — for Dr. Margaret “Mom” Chung, the nation’s first Chinese-American physician — and Big Alma — for San Francisco philanthropist and socialist “Big Alma” de Bretteville Spreckles.
[Video] Crossrail's archeological dig in London reaches Roman levels
In this video, Crossrail's lead archaeologist Jay Carver gives an overview of the intriguing finds unearthed so far, as the Liverpool Street excavation reaches the levels of Roman London. Published on May 6, 2015