English to French Tech/Engineering Mining & Minerals / Gems

(a) a delay in carrying out preparatory work – essentially the complex for extraction deeper than 1150 meters (level 1150) of the 1TER shaft and (b) low provision of transport machinery due to the chronic lack of specific subassemblies and spare parts.

Il s'agit d'un document sur l'exploitation du mine de minerais de métaux (cuivre et zinc essentiellement)
Merci !