BLACKBALL COAL CO. LTD.

The flag is yellow with a small black circle. Chartered vessels retained the colours until their sale in 1942. A report on Ngakuta specifies a pale-yellow funnel with a more brownish ball. Photographs support that design, while Ngatoro and Ngahere appear to have a very narrow black top, possibly only discolouration.

The archive combines similarly named mining and shipping entities, London and Christchurch/Wellington locations, and later vessel ownership transfers. Retrieved evidence supports the New Zealand business but does not establish the legal domicile of every named company or the full succession.