April 17, 1973ENVIRONMENTAL PROTECTION AGENCY,Complainant,v.
) PCB 72—470
CHICAGO MAGNESIUM CASTINGS COMPANY,Respondent.
The standard operating practice in a sand foundry for
magnesium base alloys is to prepare the molten metal, to usesulphur dioxide (SO2) gas or a dusting of sulphur (S) powder atthe pouring station and finally to protect the molten metal inthe mold by S admixed with the sand.
On January 24, 1972, Mr.
Steven Rosenthal and Mr.
Dr. Hanawalt’s paper submitted
at the seminar described the intent of his study as the elimination of the necessity for the S agent in the sand. Nor, upon inquiry,did he receive any complai...
Allowed
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