Hanson Cement is planning to ramp up production at its Padeswood cement works in North Wales.
Parent company Heidelberg Cement is also looking to reinstate a railhead at the works to take lorries off the road.
The recession meant that the Padeswood plant was facing closure only two years ago; instead the company chose to run it at half capacity laying off 70 workers.
Hanson spokesman David Weeks said: “It’s a good news story considering we’ve gone through such a depressed period.
“We have three plants – one in Padeswood, one in Lancashire and one in Lincolnshire. We only really needed two and Padeswood would probably have been the one to go.
“But we decided to hang on in and now we’re confident we’ll get Padeswood up to full capacity once again.”