Renovations include masonry work, new roofing and window work. A capitol idea Type 27 wheels are for metal and masonry work in sizes ranging from 3-9 in diameter, and Type 28 wheels are specially shaped for flat or corner grinding, and are available in 7 and 9 diameters.
Karst is a type of landscape where the dissolving of the bedrock has created sinkholes, sinking streams, caves, springs, and other characteristic features. Karst is associated with soluble rock types such as limestone, marble, and gypsum.
In addition, cover-collapse sinkholes have formed along roads or other areas where water is repeatedly released onto the ground, washing soil into underlying bedrock cavities and creating soil caves that can collapse. Salt mining has also created sinkholes. In 2008 two large sinkholes formed in southeastern New Mexico when cavities produced by brine well operationsâa process that injects fresh water into salt beds to make brine for use as drilling fluid in oil wellsâabruptly collapsed.