GEORGE MYERS FAIRER
Pilots at Emerson Gulch Rd, Boulder, CO

5078473, Jan 7, 1992

Mar 23, 1989

7/327930

Mark H. McKeown - Golden CO
Steven C. Beason - Lakewood CO
George Fairer - Boulder CO

The United States of America as represented by the Secretary of the
Interior - Washington DC

G02B 718

359618

The apparatus of the present invention provides means for obtaining accurate, dependable, measurement of bearings and directions for geologic mapping in subterranean shafts, such as, for example, nuclear waste storage investigations. In operation, a laser beam is projected along a reference bearing. A pyramid is mounted such that the laser beam is parallel to the pyramid axis and can impinge on the apex of the pyramid thus splitting the beam several ways into several beams at right angles to each other and at right angles to the reference beam. The pyramid is also translatable and rotatable in a plane perpendicular to the reference beam.

5189799, Mar 2, 1993

Jan 30, 1991

7/748015

George M. Fairer - Boulder CO
James M. Boernge - Lakewood CO
David W. Harris - Lakewood CO
DeWayne A. Campbell - Littleton CO
Gene E. Tuttle - Littleton CO
Mark H. McKeown - Golden CO
Steven C. Beason - Lakewood CO

The United States of America as represented by the Secretary of the
Interior - Washington DC

E01C 100

33281

The laser goniometer is an apparatus which permits an operator to sight along a geologic feature and orient a collimated lamer beam to match the attitude of the feature directly. The horizontal orientation (strike) and the angle from horizontal (dip), are detected by rotary incremental encoders attached to the laser goniometer which provide a digital readout of the azimuth and tilt of the collimated laser beam. A microprocessor then translates the square wave signal encoder outputs into an ASCII signal for use by data recording equipment.