Slate industry in Spain keep cutting machinery cool. After quarrying regional authorities often dictate that the landscape is returned as much as possible to its original state, and waste rock left as part of the extraction process is returned adjacent to the quarry Slate industry in Spain 90% of Europes's natural slate used for roofing originates from the slate industry in Spain, with the region of Galicia being the primary source of production. Slate is a fine-grained metamorphic rock that splits into thin, smooth-surfaced layers. Metamorphic rock is rock which was once igneous or sedimentary and has been subsequently subjected to heat and pressure
Slate (magazine) working on a long, ambitious project of some sort," Plotz said in an interview. "Slate" introduced a paywall-based business model in 1998 that attracted up 20,000 subscribers but was later abandoned. A similar subscription model was implemented in April 2001 by "Slate"s independently owned competitor, Salon.com. "Slate" started a daily feature ”Today's Pictures” on November 30, 2005, which featured 15-20 photographs from the archive at Magnum Photos that share a common theme. The column also features two flash animated ”Interactive Essays” a month. "Slate" was nominated for four digital National Magazine Awards in 2011 and won the NMA for General