Throughout the 1990s, the New England Southern continued to profit from multi-day-a-week service on the Manchester to Concord segment. Freight service on the White Mountain Branch had dried up except for one customer, 3M in eastern Tilton, and occasional equipment moves to the Hobo and Winnipesaukee Scenic Railroads. The last freight customer on the old Northern above Concord, Rivco in Penacook, received its last shipments in 1992. In 1989 the railroad had started a passenger operation, the Granite State Railroad, which ran until 1993. The railroad also began to run trains of privately-owned cabooses between Northfield and Concord with occasional cooperating runs with the Plymouth & Lincoln Railroad to Lincoln.