I just wanted to get a few more rock samples.

"Bill, how are you doing on the sides analysis of those rock samples?"

They took many rock samples from the mountains around here.

Down at two hundred and fifty feet the rock sample is normal.

After graduating, he worked in a laboratory on rock samples.

How about a team of us going out to collect some more rock samples?

We knew they were taking rock samples with them.

Well, without an actual rock sample, I'm not sure what to tell you.

But when the Dartmouth group collected rock samples in 1987 from the same site it got very different results.

Rock samples indicate volcanic origins going back to at least 8.8 million years.