Geological Survey has techniques to detect that kind of thing.

For one thing, we now know why the Geological Survey got involved in human history studies.

The Geological Survey has continued its research during this period.

A report on the program was released last week by the Geological Survey.

He hoped the Geological Survey knew what they were doing.

Geological Survey, which leads the effort, was recognized for its ongoing technical support in the project.

At the age of 15 he got a position as a messenger in the Geological Survey.

But for now, the Geological Survey has few instruments keeping watch over them.

Geological Survey scientists want to make sure that creating more wetlands won't increase levels of those compounds.

The new estimates are much higher than the last assessment by the Geological Survey in 2002.

He obtained an appointment on the Geological Survey in 1861.

Geological Survey - third report on the geological features. 1906.

Impressed with his ability and enthusiasm, the Geological Survey offered him a job.

The California Geological Survey has had many names over its history.

Geological Survey and are in the public domain.

The statutory retirement age for employees of the Geological Survey is 70 years.

It was prepared by three employees of the Geological Survey and represents their personal views only.

He worked for many years with the Geological Survey of India.

The Geological Survey team must now head back to where the original artifact was discovered, to try to find another one.

Geological Survey for assistance with portions of this text, notably the section on legal considerations.

Geological Survey in Denver for the past twenty years.

After that he went on to work for the Geological Survey of Canada.

Geological Survey offers a database of its publications at http://usgs-georef.cos.com/.

The Geological Survey said the quake originated 8.4 miles below the earth's surface.

The British Geological Survey had also said they were investigating.