A large ironworks was in operation in Onekaka by 1924, with a tramline that connected it to a wharf. It produced pig iron and pipes from limonite, which was mined there, and the operation employed up to 150 men.
A large ironworks was established in Onekaka by 1924, featuring a tramline connecting it to a wharf for transportation of materials and products. It produced pig iron and pipes using limonite ore mined locally, with an employment force of up to 150 individuals.