A feeder pole apparatus for blast hole surveying, the feeder pole comprising: a tubular member having a first end and a second end; a handle portion connectable to the tubular member adjacent to the first end. A nozzle having a tip and a base with an opening, wherein the opening of the base is connectable to the second end of the tubular member; the nozzle comprising a side wall aperture positioned on a side wall of the nozzle, and an elongate slot joining the side wall aperture to the nozzle tip.