Mixed blasting system

A mixed blasting system, comprising:

• a master blast controller,
• a first controller in signal communication with the master blast controller,
• a plurality of wired detonators in wired communication with the first controller, at least one of the wired detonators including a memory module for storing an identifier,
• a second controller in signal communication with the master blast controller, and
• a transmitter and antenna arrangement under control of the second controller and in communication with a plurality of wireless detonators each of which includes a respective memory module for storing an identifier, wherein
• the first controller includes a processor module configured to perform a verification process to allow blasting of all the detonators only if a control identifier communicated from the master blast controller corresponds with the identifier stored in the memory module of the at least one wired detonator, and if the identifier stored in the respective memory module of each wireless detonator corresponds with the control identifier received from the transmitter and antenna arrangement, and
• the first controller, in response to a fire signal from the master blast controller, transmits a fire signal to the wired detonators upon completion of a time interval with a predetermined duration, and the second controller, in response to a fire signal from the master blast controller, transmits a through-the-earth (TTE) fire signal to the wireless detonators, wherein the duration of the time interval is sufficient to allow the TTE fire signal to reach and to cause initiation of the wireless detonators in synchronism with initiation of the wired detonators.