A single dolomite rock core specimen has been tested in unconfined compression within the Rock Mechanics Laboratory of the Department of Mining Engineering, Queen's University at Kingston at your request. Three slab specimens of dolomite were transported to Kingston (received o June 28) and one core specimen was subsequently drilled from the slab materials and tested

Each intact specimen was subjected to a process of preparation which included:,
- diamond drilling to prepare rough cut core material
- diamond sawing to prepare cylindrical samples having nearly parallel end faces and length-to-diameter aspect ratios varying between approximately 2.15-to-1 and 2.35-to-1
-diamond lathing, to prepare sample faces parallel to within ± 0.025 mm
- testing to unconfined failure within a servo-controlled compression frame; all tests were performed under axial strain control at rates approximating ****** and simultaneous recording of axial force, axial deformation and circumferential deformation variables were conducted from which determination of standard failure parameters was made (Unconfined Compressive Strength, Modulus of Deformation (Young's Modulus) and Poisson's ratio)

Based on a single unconfined compression test, the following data was determined Unconfined Compressive Strength 142.3 Mpa (20,633 psi)
Young's Modulus (Modulus of Deformation) 29.90 Gpa (********)
Poisson's Ratio 0.08
Density 2.73 g/cm

Strength data and failure test observations indicate that this dolomite material exhibits competent, dense fabric of medium-to-high strength. Visual evidence also exists of pre-existing, healed fractures which do not adversely affect the ultimate strength of rock specimens.