Traditional metal working in Mexico more. Important metal working centers include Taxco for silver, Santa Clara del Cobre for copper, Celaya for tin and Zacatecas for wrought iron. Metal working in Mesoamerica, especially of silver, gold and copper was advanced by the time the Spanish arrived, mostly concentrated in the modern states of Michoacán, Oaxaca and Guerrero. The mining and working of metals probably came to Mesoamerican cultures from the south. Metal working was principally in gold, silver, tin and lead, with some copper work known in what is now Michoacán. Gold was generally obtained in powder or pellet form in rivers and streams from
Celtic metal Cruachan," further noting that "what they were doing in the 70s is the equivalent of what we do now." Cruachan's debut album "Tuatha Na Gael" was released in 1995 and the band has since been acclaimed as having "gone the greatest lengths of anyone in their attempts to expand" the genre of folk metal. With a specific focus on Celtic music and the use of Celtic mythology in their lyrics, Cruachan's style of folk metal is known today as Celtic metal. Parallel to Cruachan, the black metal act Primordial also released a demo recording in 1993 and "found themselves heralded