Rumours continue to swirl about what the future looks like for Vale and Glencore in Sudbury.

The two mining giants still aren't talking publicly about plans to combine some operations.

Comments just before Christmas from Vale's CEO indicated the two rivals are now in serious discussions about how to work more closely in Sudbury.

But one industry expert says details will be slow in coming.

“I think we are going to see very little information come out that is public that we can actually evaluate,” said Bruce Jago, head of the Goodman School of Mines at Laurentian University.

“They are going to keep this really close to their chest.”

Jago said he doesn't think any new found co-operation between Vale and Glencore's Sudbury Integrated Nickel Operations will result in any major job losses.

Vale eliminated 25 non-union positions in November of 2013, and said the move was part of larger cost-cutting measures to deal with financial pressures.