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
Metal Walker his son as a gang of Metal Busters attack. The main character and his Metal Walker, Meta Ball, must then search for his father on the island. Professor Hawk, Tetsuo's employer tells the main character that his father will be found where there are Core Units, so he then goes to seek them out. "Metal Walker" found praise among its critics, particularly for the game's unique "science fiction spin" on the "Pokémon" series. Gerald Valloria of GameSpot.com said of the game that ""Metal Walker" is a more than worthwhile endeavor for anyone that is in between "Pokémon" games, and it