At Umm el Tlel (Syria), the lntermediate Paleolithic industries, rightly qualified as Transition lndustry, are specific by new technical orientations. The bladelets flaking is one of those innovations. Among the four facies that characterize this lntermediate Paleolithic, only two yielded a great bladelets flaking, representing more than a third of the predetermined removals. The presence, on a ll types of bladelets, of micro use-wear corroborates the internationality of this production.