British troops in Afghanistan are now using 10-centimeter-long 16-gram spy helicopters to survey Taliban firing spots. The UK Defense Ministry plans to buy 160 of the drones under a contract worth more than $31 million.
Gallium is a chemical element with symbol Ga and atomic number 31. Elemental gallium does not occur in nature, but as the gallium(III) compounds in trace amounts in bauxite and zinc ores. A soft silvery metallic poor metal, elemental gallium is a brittle solid at low temperatures.