1.   And two months ago, laboratory workers discovered a long-forgotten tank containing more radioactive material.

2.   At the same time, health workers were discovering an alphabet soup of strains of hepatitis, a viral infection linked to blood products.

3.   A building maintenance worker discovered the body in the offices of All India Handloom Fabrics Inc.

4.   During the activities, workers discovered graves of early white pioneers.

5.   FedEx cargo workers discovered the problem in the most obvious way.

6.   However, a maintenance worker discovered that the swan had disappeared by Thursday morning.

7.   In the process, small-business and home-office workers discovered just how much they depend on E-mail, and some were irate.

8.   It had hoped to return the refinery to full production this summer, but on Friday workers discovered a leak in a steam generator.

9.   John Regan, a part-time instructor in Massachusetts, said that when the day-care workers he uses discovered how little he made, they were shocked.

10.   Liftoff was postponed after workers discovered a coolant line had been installed without thermal insulation.