Roxann Dawson directed this episode. This is yet another Star Trek connection. Colm Meaney/Durant was Chief Miles O'Brien on TNG and DS9, Roxann Dawson was B'Elanna Torres in VOY. Anson Mount/Bohannnon is Captain Christopher Pike on Discovery and Hell in Wheels-Director of Photography/DOP Marvin V. Rush worked also on TNG, DS9, VOY, ENT
The steam-powered excavator seen at work near the end of this episode - and at the beginning of the next - appears to be modeled after the one patented in 1839 by American inventor William Otis (1813-1939). His cousin was Elisha Otis (1811-1861) of Otis Elevator fame.