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Clear
glass, or flint, is made up of beverage
or food container glass. Such glass should
be free of excessive moisture. It may
contain normal container labels and metal
tops.
Prohibitive Materials: Light bulbs, crystal,
windows, mirrors, drinking glasses, ceramic,
or any other non-container glass. Metals,
ores, minerals, bricks, clay, and rocks
are also considered contamination.
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