HAZEN, 58.5 m. (1,760 alt., 689 pop.), was named for A. D. Hazen, Third Assistant Postmaster General in 1884 when postal service was established here. An Old Settlers Monument, at the E. end of Main St. in a triangular plot known as Washington Memorial Park, consists of a concrete pyramid with a buffalo skull embedded in the top. Business men of Hazen have provided a Tourist Park (camping facilities) in a heavily wooded area along the Knife on the southern edge of the town.

At 66 m. (L) is the large underground LIGNITE MINE of the Knife River Coal Mining Co. (Morning preferred for visiting; guides at mine office in Beulah, see below.) This mine is one of the largest in the State. The entrance is at the head of a little valley a few rods L. of the highway. It opens into a long tunnel, with a narrow-gage trolley line extending down its center. Six electric locomotives are employed to draw a fleet of 450 mine cars over almost 30 m. of track which carry coal out of the mine to the processing plant. The entry has passages branching from it, leading to the veins from which the coal is taken. As the coal is taken out, tunnels or rooms are created, extending for miles through the underground darkness, in some places as much as 140 ft. below the surface.

The coal is loosened by electric cutting machines and blasting powder, after which loading machines carry it upward to the mine cars; these are formed into trains to haul the lignite to the processing plant.

During an 8-hour shift 2,500 tons of coal are mined, enough to fill more than 60 40-ton cars. It is estimated that this particular field contains about 50,000,000 tons of lignite, enough to enable operations to continue for 50 years. Visitors to the mine are given electric lights fastened to stout fiber helmets, and get a novel ride on the underground train.

BEULAH, 68.5 m. (1,797 alt., 913 pop.), named for the niece of an official of the town site land company, forms one main street along the Knife River just E. of its confluence with Spring Creek. The Processing Plant of the Knife River mine, and an Electric Plant of the North Dakota Power and Light Co. are in the eastern part of town. The electric plant uses lignite to generate the power with which it serves surrounding towns.

At 69 m. is the junction with ND 49, a graveled highway. What is believed to be the SITE OF CHARLES LE RAYE'S CAMP (L), used by the French explorer in 1803, has been marked by the Mercer County Old Settlers' Association. Le Raye, who was held captive three years (1801-4) by a band of Brulé Sioux, is said to have been the first white traveler to mention the Knife River. During his captivity he was taken through much of the area between the Mississippi and the Rockies, and was one of the first white men to become familiar with that region.

At 75 m. (L) is the large lignite strip mine of the Zap Colliery, one of the heaviest-producing mines in the State, with an annual production of 140,000 tons.

At 76.5 m. is the junction with a county graded dirt road.

Left on this road, a winding country trail unsuited to trailer travel, to MEDICINE HILL, 11.5 m., from which flowed spring waters attributed with healing powers by the Indians. Chert, a mineral rock closely allied to flint, is found in the Slope area, and near the hill is a quarry from which natives took material for arrow-points and knives.

GOLDEN VALLEY, 83.5 m. (1,946 alt., 294 pop.), was named for the fertility of the surrounding region.