tonne hit

[IversonLong]

Does anyone know how to handle "tonne hit"? (E.g. Wednesday's Shanghai iron ore prices remained at a six month high of $170-$172 per tonne hit in the previous session.) I understand "tonne hit" to be a noun here but can't find a definition to distinguish it from regular "tonne".

Thanks very much.

[NC1]

???

В среду шанхайские цены на железную руду остались на шестимесячном максимуме -- $170-172 за тонну -- достигнутом в прошлом сезоне.

[ilya.buchkin]

NC1 +1: ... per tonne [that was] hit in the previous session.