No one expects much headway to be made anytime soon since both sides have dug in on points they care about.

Yet after only a few meetings of the task force, both sides dug in, according to Oppenheimer.

For the next two years, the armistice negotiations dragged on while both sides dug in.

Both sides dig tunnels, but the planet's remaining wildlife lives down below, and it doesn't like competition.

Throughout the summer and fall of 1775, both sides dug in, with occasional skirmishes, but neither side chose to take any significant action.

Both sides have dug in, and a work stoppage has been predicted.

Since then, the two sides have dug in their heels and taken occasional broad swings at one another.

Both sides dug in and prepared for the inevitable.

These factors allow the two sides to dig in during negotiations.

The two sides remain miles apart and dug in.