41.   The agency may issue subpoenas if the letters fail to produce material sought by lawyers in the enforcement division.

42.   The biggest future impact, Conrad said, probably will be in lawsuits over the cost of cleaning up hazardous waste at plant sites where government material was produced.

43.   The center also produces course material for investment seminars at Schwab branches.

44.   The company also produces curriculum materials, including recordings that are used in the classes and at home by parents and children.

45.   The complex will produce petrochemical materials next year.

46.   The followup work, completed in December, produced the materials being reported Wednesday, with hardness greater than anything except diamond.

47.   The magnets are used in centrifuges that produce fissile materials for use in atomic bombs.

48.   The new technique goes further, chemically modifying the structure of soy oil to produce material with the strength needed to make body parts.

49.   The North Koreans have frozen construction on their two unfinished nuclear reactors, which could have produced nuclear material for scores of bombs.

50.   The whole industry, from providing food for the slave captors to producing materials to build the ships on which they sailed, is explored.