Slide - 35mm Colour slides, Rock Dust, 1986

Physical description

9 slides labelled, describing the use of Rock Dust Nov 86. Ways of applying Rock Dust - Proximity of holes of aerator. 2. Rock Dust Application - Hole made by soil aerator (Allen Miller). 3. - Hole made by soil aerator. 4. Rock Dust - Aerator pattern. 5. - Aerator hole layout. 6. - Soil aerator (Allen Miller). 7. - Aerator tine layout. 8. - Tine layout. 9. - Width of aerator holes.

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