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
Walter Janka called upon to testify against Janka, with the words: Wolfgang Harich had already been convicted, and sentenced to a ten-year jail term in March 1957, in respect of the same alleged conspiracy as Janka. The two had previously worked together at the Aufbau publishing house. Harich was brought into the July show-trial by as a leading prosecution witness: his testimony now heavily implicated Janka. The two former friends would remain estranged from one another for the rest of their lives. Janka served the first part of his sentence in Berlin-Hohenschönhausen prison where he had been held on remand, but in