A delegation consisting of county councillors and union representatives will travel to London to meet the new Defence Minister Philip Dunne.
They want to persuade him to keep the munitions site at MoD Longtown open, safeguarding more than 300 jobs.
Mr Dunne became the Defence Minister in the recent cabinet reshuffle, his predecessor Peter Luff, had visited the site and appeared to be receptive to save at least some of the jobs.
Councillor Tony Markley is part of the delegation, he explained to ITV Border that they will express the importance of the site.
The MP for Dumfriesshire, Clydesdale and Tweeddale is also part of the delegation speaking to the minister, our camera's caught up with him at the Conservative party conference.