Page 130 - Mines Facilities Plan

N Annotated aerial of Rubey Clay Mine and Pittsburg Coal Mine

occupied by the General Research Lab Annex, Earth Mechanics Institute, and
In these surface mines, rail carts hauled clay along the bottom of the clay pits,
was extracted from between the sandstone beds, leaving behind near-vertical
Redevelopment on former coal and clay mines should pay particular attention
the Parking Lot C/Q entry just north of the North Intramural Field. Debris was
corner of the Stermole Track and Field Complex, and a marker memorializes
some of which were later filled with debris. This area has vertical sections of
to the subsurface geological conditions. Buildings in these areas may need
The Rubey Clay Mine was a surface mine that was located in the area now
large void was discovered on the western edge of the Maple Street parking
sandstone separated by voids where clay had been removed. The campus
ns”. Similarly, the Pittsburg Coal Mine was a surface mine that
Lot Q. Workers extracted clay from high-angle claystone beds interbedded
observed during excavations for the General Research Lab Annex, and a
with cemented, resistant sandstone beds. As mining progressed, the clay
has experienced sink holes in the area of the North Intramural Fields and


the mine activity and 1889 disaster. sandstone “fi was located in the area now occupied by the intramural fields and Lot D. garage. different and more substantial foundation systems than is typical. Colorado School of Mines Facilities Master Plan 124