Solid Energy's New Zealand (SEN) K1 opencast prospect is located within CML 37156, which is part of the Maramarua Coalfield near Huntly. This licence contains three historic underground mines and the historic Kopuku opencast mine which can be split into three parts-K1 (SEN), K2 (SEN) and K2 (Glencoal Energy limited owned). This feasibility study looks at re-establishing mining within the K1 pit. A number of different factors are analysed including geology, mine design and infrastructure, coal processing and handling, permits and access, environmental considerations, health and safety, labour and distribution.