Olea capensis wood materials. It is also the one of the world's hardest woods according to the Janka hardness test. The timber has a good abrasion resistance and is very strong. It is an excellent turnery wood, and is used for a wide range of decorative items. Olea capensis Olea capensis, also known by the common name black ironwood, is an African tree species belonging to the Olive family (Oleaceae). It is widespread in Sub-Saharan Africa from the east in Somalia, Ethiopia and Sudan, south to the tip of South Africa, and west to Cameroon, Sierra Leone and the Islands of the
Les Janka in international affairs and the formulation of U.S. foreign and defense policy. A graduate of the University of Redlands, Janka received a master's degree in International Relations and Middle East Studies from the School of Advanced International Studies at Johns Hopkins University. Janka worked for the United States Information Agency from 1964 to 1968 and was Assistant Dean of the School of Advanced International Studies of Johns Hopkins University from 1968 to 1971, when he was appointed Special Assistant to Henry Kissinger on the National Security Council at the White House. Janka became Senior National Security Council Staff Member for