Should the foundry consider the use of cast in trunnions for realistic technical reasons, theprior approval of the responsible Tronox KZN engineer (the Engineer) shall first beobtained. If granted, the trunnions shall be forged from material with similar chemicalcomposition and mechanical properties as that of the pot material. All corners on suchtrunnions shall have a radius of at least 15 mm, and they shall be located in the casting ina configuration acceptable to the Engineer.