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 KEY:
(1)
YEAR OF TREATMENT
(2)
PRESERVATIVE SYMBOL
(3)
PRESERVATIVE RETENTION SYMBOL
(4)
LETTERS DRY AND/OR T50 AS APPLICABLE
(5)
SPIB CERTIFICATION MARK
(6)
INTENDED USE OF MATERIAL
(7)
IDENTITY OF TREATING COMPANY
AND PLANT LOCATION
FIGURE 6-4
Quality Marks Used by the Southern Pine Inspection Bureau
6-14
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