B&M NH Main June Update By Jenny Freeland | July 9, 2018 | Last updated on November 7, 2022 Check out the progress on this HO scale layout Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates B&M RR GP7 1562 hauls a mixed freight around Steve Tello’s Boston & Maine NH Mainline. Construction and landscaping continues on the HO scale layout set in Lowell, MA.