Field tools may be nothing more than a rock hammer and hand lens.

Then he pulled a rock hammer from his equipment belt and chipped off a bit of the asteroid.

At 25 minutes: Andy talks to Red and asks for rock hammer.

Back at the bottom of the cliffs, Estrela had given him her rock hammer.

She took out the rock hammer and began, carefully, to chip around the edges.

He kneeled by it and prodded with his rock hammer.

He drew the taper of a rock hammer into a point for better ice purchase.

Traditionally, we used to picture geologists as running around in the field with a rock hammer.

Get a pick handle and a couple of rock hammers.

He stripped off the backpack, removed the rock hammer and grinned.