Abstract: An apparatus including a supply system that is adapted for supplying at least a first explosives material, the supply system comprising: at least a first explosives material delivery mechanism; a bin having an upper end, a lower end, and an interior volume that provides at least a first compartment for storing an explosives material, the first compartment having a corresponding lower end; at least a first outlet provided at the lower end of the compartment for feeding the first explosives material from the first compartment to the first explosives material delivery mechanism; at least a first removable cover for a second outlet at the lower end of the compartment, and installable thereon and removable therefrom; a port provided at the upper end of the bin by which the explosives material is loadable into the first compartment; and an operation tool that is adapted to allow installation and removal of the first removable cover by way of the port without requiring any personnel to fully or partially enter in