Exploration; currently under reviewProducing mine Employees 1,157 Contractors 1,530 Mine plan¹ 12 years Š Local operating environment: the mine is the primary economic contributor to the district in which it is located Š Opportunities: raise maths and science education standards and support local economic development Š Challenges: fairly isolated location, high youth unemployment and poverty Marketing and corporate Petra also has diamond marketing operations in Kimberley and Johannesburg, South Africa, and Antwerp, Belgium, as well as corporate offices in London and Johannesburg.