Core samples are cylindrical sections of a naturally-occurring substance, such as sediment or rock, that are obtained by drilling with a special drill and brought to the surface for examination. Core samples are used in underground or undersea exploration and prospecting. . The hole made for the core sample is called the "core hole"1. Colour photocopy of original photo. Four separate images of core samples. Core samples are placed side by side, lengthwise. western mining corporation, goldmining, kangaroo flat gold mine, rock samples, core samples, exploration

Used on VR Sandringham Black Rock trams as part of the destination setting mechanism - told the driver or conductor what the destination was set to. Shows the destinations of: Depot Black Rock Royal Ave Melb (Melbourne) SandringhamDemonstrates a plate that would have been attached to tramcar as part of the destination box mechanism.Round plate or disc, white front, lettered in black with four drilled holes. Two copies held. Has five destination names painted in black.vr trams, sandringham to black rock, destinations