Operation Anvil (Mau Mau Uprising) the reserves. The "Grey" grade was made up of prisoners believed to be passive Mau Mau sympatherisers though for whom strong evidence suggesting their true loyalties was lacking. The last category, "Black", was reserved for detainees identified by the hooded informers or the Special Branch of the Kenya Police as potentially violent insurgents or terrorists. A few may have been prosecuted by the government, but most were funneled through the "Pipeline", a system of work camps, decreasing in brutality until an individual was "re-educated" and deemed safe to release on a native reserve. Operation Anvil (Mau Mau Uprising) Operation Anvil
Mau Mau Island Alfred Tredway White and Frederic Pratt with the requirement that it become parkland. In the 1930s, sand excavated during construction of the Belt Parkway was added to the island. Subsequently, patches of asphalt were laid on top to prevent the sand from blowing onto the nearby Marine Park Golf Course. In 2011, the New York City Parks Department began a restoration project on the island, with the goal of restoring salt marsh and bird habitat. Mau Mau Island Mau Mau Island, also called White Island, is a small uninhabited island in the New York City borough of Brooklyn, located between