A lot has changed since the early days of the smelter and today, Bell Bay Aluminium produces about 190,000 tonnes of aluminium each year.

The business has been a large part of the Northern community over the years and for the next two weekends, the site will be on display to the public for its 60th anniversary open day.

The special behind-the-scenes look at the operation will take visitors inside the smelter for a rare glimpse at its day-to-day production.

On the day, employees will take guided bus tours to provide insight on how the aluminium products are made and historical displays and memorabilia will be on show.

Bell Bay Aluminium community relations specialist Lou Clark said there had been a lot of interest from the community about the open day.

"The interest has come from people who worked at the smelter before and people who had a parent who worked at the smelter and just the general community interest too," Ms Clark said.

"There are a few people coming from interstate to come and have a look.

"It's a pretty rare opportunity for people to actually come inside the gate and find out a little bit about what we do here and what we make."

The second Bell Bay Aluminium open day will be held on September 27 from 10.30am until 2.30pm.

Guests are asked not to bring glass bottles, metal cans, aluminium drink bottles, aerosol cans or cigarette lighters into the smelter.

Bell Bay Aluminium will celebrate its official 60th birthday on September 23.