Word: borax
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Dates: during 1980-1989
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...lower, in part because the kilns buy more of the cheaper log slabs -- the cutoff outsides of logs when they are squared by a sawmill into lumber. These, along with the hardwood, are charred in kilns, put through a hammermill and mixed with charred sawdust, coal, limestone, sodium nitrate, borax, wheat paste and steam, which turns the mixture into a slurry that is pressed into briquettes and then put through a drying process...