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
What Time Is Love? on 20 August 1990. The main B-side accompaniment of "What Time Is Love? (Live at Trancentral)" was the "Techno Gate Mix" of the track, which retained the title track's rhythm and bass as a backdrop to extensive samples of Jimi Hendrix's "Voodoo Child (Slight Return)". Another UK 12" featured instead the "Wandaful Mix", which sampled from Wanda Dee's "To the Bone". Key "America: What Time Is Love?" was released in the US during October 1991, four months before its release in the UK and elsewhere (24 February 1992). The B-side "America No More", which featured anti-war sentiments directed at US