U.S. Logan's Approach.

Logan’s approach ended at the Confederate Third Louisiana redan, having been carried to this point on June 22, with a gallery for a mine begun the next day. The gallery was carried 40 feet to the front, and a mine at its head, charged with 2200 pounds of powder, was fired about 3:30 p.m. on June 25. Another gallery was then started from a covered gallery constructed in the crater made by the explosion, and the mine at its head was fired on the afternoon of July 1.

Vicksburg, Mississippi · United States