Traditional metal working in Mexico one in silver, which represented the sun and moon respectively. The existence of gold and silver in Mexico was one of the main attractions for the Spanish in the New World, with the conquest of the Aztec Empire and subsequent exploration with the aim of finding more of these precious metals. Mining and metal working became a main aspect of the economy of colonial Mexico. Most of the emphasis was on the mining of gold, silver, copper, iron, lead, platinum and tin with much of the metal, especially gold, shipped to Spain. Initially, the working of metals in the new
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