Étude de trois grands tonneaux mis au jour à Reims/Durocortorum (Marne) : le savoir-faire des tonneliers antiques by Pierre Mille, Philippe Rollet

“…The pitch coating, which ensured the sealing of the three vats, was up to 0,50 cm thick at some points. During Antiquity pitch was produced by pyrogenation (distillation) of pine wood (Pinus sp.) in large jars. …”
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