1927 - Arkansas Missouri Power Co. Building - Mammoth Spring, Ar.
Posted by: Groundspeak Premium Member iconions
N 36° 29.700 W 091° 32.078
15S E 631243 N 4039851
This native stone building is located at the south end of the Mammoth Spring Dam.
Waymark Code: WMKMJ7
Location: Arkansas, United States
Date Posted: 05/02/2014
Published By:Groundspeak Regular Member Team Sieni
Views: 2

From the National Register application:
(visit link)

"The one-room powerhouse, which was constructed on top of the south turbine well in 1927, measures 25' x 25' with a height of 30'. The fieldstone powerhouse building features grapevine mortar and rests on a concrete block foundation. The building has a flat metal roof with low concrete coping at the roofline. Mr. A.D. Couch of the Arkansas-Missouri Power Company acted as general contractor for the project of converting the dam into a hydroelectric power plant. The materials for the powerhouse building were provided by the Fulton Iron Works Company of St. Louis, MO, and the same company sent representatives to Mammoth Spring to oversee the construction of the powerhouse.

The north (front) elevation of the powerhouse is fenestrated by a pair of six-pane half-light steel doors with opaque glazing. A fixed, screened louvered vent is centered on the lower half of each door as well. The doors are crowned by a single concrete panel. Three concrete steps bounded by low stone porch railings with concrete caps lead up to the building" main entrance. A rectangular panel created by slender concrete blocks set into the fieldstone wall is centered on the building's upper facade. Centered inside this panel is a smaller rectangular panel of slender concrete blacks, which surrounds an engraved granite panel that reads,"Arkansas-Missouri Power Co. 1927."

The building east (side) elevation is punctuated by three evenly-spaced, twenty-pane stationary windows with four-pane central awning sashes. The windows have opaque glass, metal muntins, and concrete lintels and sills. A small fixed louvered vent, centered below the southernmost window on this elevation, is situated just above the building's concrete block foundation.

The south (rear) fade of the powerhouse features a set of twelve-pane half-light steel double doors with opaque glazing. A fixed, screened louvered vent is centered on the lower half of each door. The doors are crowned by a single concrete panel. A dual-bulb outdoor light is centered just above the concrete panel. Three concrete steps bounded by low stone porch railings with concrete caps lead up to the building's rear doors.

The west (side) elevation of the powerhouse is punctuated by three evenly-spaced, twenty-pane stationary windows with four-pane central awning sashes. The wiindows have opaque glass, metal muntins, and concrete lintels and sills. Two small fixed louvered vents, centered below the two northernmost windows on this elevation, are situated just above the building's concrete block foundation. A third vent opening located below the southernmost window has been bricked in. Power lines are still connected to the building on this side, but they have been cut off close to the foundation."
Year of construction: 1927

Full inscription:
Arkansas-Missouri Power Co. 1927


Cross-listed waymark: Not listed

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twoodso visited 1927 - Arkansas Missouri Power Co. Building - Mammoth Spring, Ar. 10/16/2023 twoodso visited it
iconions visited 1927 - Arkansas Missouri Power Co. Building - Mammoth Spring, Ar. 04/09/2014 iconions visited it

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