Slate industry in Spain 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 in varying degrees thereby altering its composition, structure and appearance. It is used extensively in the building industry, particularly for roofing tiles. The production of slate is estimated at 4 million tons per year. Galicia is situated on the
Rock (manga) is often presented as a considerably more complex antagonist than many of Tezuka's other villains (who are usually bad people simply because that's what they've always been and always will be), and his actions are sometimes explained by a rough past (in the manga Nextworld, "Metropolis" and the newest "Astro Boy" series, for example). Rock often appears as either a heroic major or protagonist character, such as in "Adventures of Rock" and "Princess Knight" TV Series (as Prince Frank, Sapphire's love interest), or as an antagonist whose brutal means often have justified motives through the storyline (such as in "Phoenix"