NIAMEY, Niger (AP) - Two or three times each week, a convoy of flatbed trucks loaded with drums of mined uranium heads south from the Sahara Desert in Niger on a 10-day journey to the port of Cotonou in neighbouring Benin. Two lightly armed Nigerien gendarmes accompany the tarp-covered trucks on their 1,995-kilometre trip. They have no satellite phones or other ways to communicate in case of trouble. On their prearranged stops for the night the drivers must notify the mining companies, but they take no special precautions to secure the drums against theft. This low-grade security for the powder...