Open invitation to tender, deadline 13/09/2021, for the general management for the Sigirino access adit. For tender documents click here (Italian) and/o here (French). Tenders must be sent to Ferrovie Federali svizzere FFS Infrastruttura, acquisti, supply chain e produzione, attn Elisa Bartesaghi, Bellinzona, email elisa.bartesaghi@sbb.ch. Duration of the contract is from from 17.01.2022 to 31.12.2024. Contact Infrastruttura - Progetti di ampliamento e rinnovo - Gestione progetti -Regione Sud, attn Cristian Reveruzzi , Bellinzona, email cristian.reveruzzi@sbb.ch . For further on the tender please click here30/21.