1.   At the same time, materials scientists launch an extensive search for other materials that might have similar effects.

2.   Police and medical staff carried out an extensive search of the hospital grounds and several hours later they found her body.

3.   Despite the reward and an extensive search of the area police enquiries seemed to have come to a halt.

4.   An extensive search engine makes it easy to find quotations or works by specific authors.

5.   Anticipating skepticism about the find, Hack said they delayed an announcement while conducting an extensive search of medical literature for any reference to the muscle.

6.   At first they thought painters might have moved them, but an extensive search of the building failed to turn them up.

7.   A half-dozen scuba divers began a more extensive search.

8.   After an extensive search of multiple electronic databases, the P-I has determined that no person has ever outrun nature.

9.   Airline passengers already are subject to extensive searches to assure the safety of that mode of travel.

10.   But after an extensive search of the area by rescue crews using dogs, helicopters and scores of volunteers turned up nothing, they now believe Omar was kidnapped.