The extension of the suburban residential areas into the foothills has resulted in building operations in closer proximity to existing quarries. Subdivisions in the Burnside, Burnalta, and Greenhill areas have accelerated the erection of homes near Greenhill Quarries owned by J.H. Leverington. A further subdivision of land adjoining Leverington's property is anticipated to take place in the near future. This will mean a greater number of homes adjacent to the quarry. As the owners move in they realise that a quarry is located behind the ridge and the sudden shock of explosions in the quarry is startling. Consequently when the foundations settle and cracks develop in the walls, and the timber shrinks, causing cracks to develop along the joints of fibrous plaster in wooden framed houses, the obvious thing is to blame the quarry blasting for the damage.