Now that the stack has been felled, there is a new structure out at Port Kembla that can be seen from way up the coast.
At the edge of the outer harbour sits a large facility, noticeable because it is entirely battleship-grey.
The building is the Cement Australia Grinding Mill, one of the first projects of Port Kembla's outer harbour development.
The mill, which went online in April this year and is the largest of its kind in the country, produces cement and ground granulated blast furnace slag.
The latter can be used as a cement replacement.
Port Kembla was chosen for the deep harbour, easy access to Sydney and because it is close to Australia's largest blast furnace slag supply.
The reason the entire facility is grey? Well, we couldn't reach anyone at Cement Australia to find out but we think it may be because it's the same colour as cement itself.
That way, if it gets a coating of cement dust it won't look any different.