Masonry oven India, tandoors are traditional clay ovens, although these days modern electrically fired tandoors are available. The open-topped tandoor is a transitional design between the earth oven and the Roman-plan masonry oven. In the precolumbian Americas, similar ovens were often made of clay or adobe and are now referred to by the Spanish term "horno" (meaning "oven"). Horns are also traditional in the American Southwest. The traditional direct-fired masonry design is often called a "Roman" or "black" oven and dates in Western culture to at least the Roman Republic. It is known as a black oven because the fire generates soot
Operation Clay Operation Clay Operation Clay (also known as Clay-Eva; Eva was a code name for radio transmitter) was a cover name for the operation executed during World War II in the Protectorate of Bohemia and Moravia by Czech paratroopers trained in England. It was organized by intelligence section of exile, Czechoslovakian Ministry of Defence in London. It was part of third wave of special tasks operations in Nazi-occupied territory. The members of Clay group were sergeant Antonín Bartoš, sergeant Jiří Štokman and radio-operator sergeant Čestmír Šikola. They gathered intelligence in the region of Northern Moravia, which they transmitted by radio to