Dimension stone converted to dimension stone production. However, first the stone shattered by heavy and indiscriminate blasting must be removed. Dimension stone is separated by more precise and delicate techniques, such as diamond wire saws, diamond belt saws, burners (jet-piercers), or light and selective blasting with Primacord, a weak explosive. A variety of igneous, metamorphic, and sedimentary rocks are used as structural and decorative dimension stone. These rock types are more commonly known as granite, limestone, marble, travertine, quartz-based stone (sandstone, quartzite) and slate. Other varieties of dimension stone that are normally considered to be special minor types include alabaster (massive gypsum),
Robert Paterson (stonemason) Robert Paterson (stonemason) Robert Paterson (1715–1801), known as "Old Mortality", was a Scottish stonemason who took it upon himself to travel around lowland Scotland carving inscriptions for the unmarked graves of Covenanters martyred in the 17th century. Walter Scott made him a principal character in his novel "Old Mortality" (1816). Paterson was born near Hawick in 1715. Through the patronage of Sir Thomas Kirkpatrick, whose cook he had married, he obtained the lease of a quarry at Gatelawbridge, but in 1745 his house was plundered by the retreating Jacobites, and Paterson himself, a pronounced Cameronian, was carried off a prisoner.