1.   Construction workers use scaffolds today to build multiple-story apartments.

2.   Workers used high-pressure hoses to clean the rocks after the oil spill.

3.   Workers used steel beams to brace the roof.

4.   The workers used crowbars to lever the heavy stone block into its new position.

5.   More recently, other research workers used human and animal gall bladders to study aspects of epithelial cell function in relation to gall stone formation.

6.   In an effort to improve myocardial and cerebral blood flow, several workers have used abdominal compression interposed during the relaxation phase of chest compression.

7.   The company, Altovar Limited, makes varnish, which ignited after a worker used a blow torch to try to unblock a pipe.

8.   And in two, workers used shoes to blend the flour.

9.   And some workers may even use drugs to boost their performance, the researchers say.

10.   At ground zero in lower Manhattan, workers use heavy equipment to clear debris.