Mine: Mansfield Mine, Crystal Falls, MI


Began → Mansfield Mine → Became

From: 1889

Location: Lots equivalent to SW-SW Sec. 17 and NW-NW Sec. 20 of T43N-R31W

Owned by: Oliver Iron Mining Co.

Produced: Iron Ore, hard, brown, non-bessemer.

Method: Underground. Depth: 1,517 feet.

Railroad connection: C&NW branch east from Crystal Falls Junction.

Until: 1913

Lifetime Production: 1,462,504 tons between 1890-1913.


[LSIO-1950]

Located east of Crystal Falls, MI


Timeline

September 28, 1893 - Mansfield Mine, Crystal Falls, Iron Co. - Inrush of water - 28 fatalities

February, 1897 - Iron Mountain, Mich., Feb. 19--The decomposed remains of one of the twenty-seven miners drowned in the Mansfield mine, near Crystal Falls, four years ago, was recovered late last night. The workmen expect to reach the other bodies soon. It will be remembered that the Michigamme river suddenly broke into the mine and overwhelmed the miners.-- [Emporia Gazette, KS 02-19-1897]

The Mansfield Mine was located about six miles east of Crystal Falls in Iron County. The mine operated from 1890 until about 1913 when it was worked out and finally closed. Ore was shipped from this location on the Chicago & Northwestern railroad via a branch line from Crystal Falls Junction. [MINDAT]

In 1893, the mine, which was located under the Michigamme River, collapsed causing the river to flow into the various levels of the mine. 27 miners were killed in the disaster. The river was later diverted and the water was pumped out of the mine and mining resumed.

September 29, 1893. The Mansfield mine, near Crystal Falls has caved in, killing 40 miners. A heavy fall of ground at the Mansfield Mine this morning entombed 40 men. The situation is awful and the scene heartrending. A rescuing party is doing everything possible with slight chances of reaching them alive. [PHTH]

1911. The Mansfield is the property of the Oliver Iron Mining Company located at Mansfield, Iron County, Mich., about seven miles east of Crystal Falls. Geologically, the Mansfield ore body stands alone. It is not of the same age as the Amasa, Crystal Falls or Iron River ore bodies nor the ore bodies at Iron Mountain and east. It lies in a thin slate formation, above and below which is greenstone. There are other slates east of the Mansfield mine which are of the same geological age as the Mansfield slate, but they are not so enclosed by greenstone. The ore body strikes nearly north and south and dips west at a high angle. It is about eleven feet thick, and very uniform, and is fairly persistent with depth.

It is spoken of by many as a true fissure vein, and looked upon as an eruptive, but the ore was concentrated in exactly the same way as were the oilier iron ore bodies of Michigan. Elsewhere the Mansfield slates have not produced ore. The mine is operated by one shaft, known as No. 2, and has a depth of 1,390 feet. It is vertical and has three compartments, two for skips and one for ladderway, pipes, etc. The skips in this shaft are suspended from single deck cages, which are used for hoisting and lowering men. The equipment here consists of one 28”x48” simple reversible Corliss hoisting engine, geared to two drums, each 10 feet in diameter with 6½ foot face. One simple duplex slide valve, two stage air compressor, steam 18”x24”, air 28¼”‘x17¼”x24”. The boiler plant consists of three 72”x18 ft. horizontal tubular boilers.