kiln

Then there are the industries in the city’s outskirts - like the coal-fired brick kilns - adding even more pollution to the air.

The home of ceramist Raina Lee includes a tree house featuring her pottery as well as a garage studio that houses her pottery wheel, kilns and her crackly volcanic glazes.

In her studio, Lee has placed her kilns and pottery wheel and tried alternative firing techniques such as raku and pit firing.

Evidence of pottery, ceramic building material such as roof tiles and bricks and lime, were unearthed but "a tile kiln was an exceptional discovery".

Back at the metal workshop, the roaring sound of the kiln — which is used in the process of turning molten bronze and aluminum into objects — fills the quiet desert mesa with an ambient soundtrack.