Since 1986 Robertson Mfg. Ltd. (RML) a family owned business has been manufacturing wooden western style core boxes for core and soil samples. Since our early beginnings, RML has built and maintained an outstanding reputation for dedicated customer service, superior quality products and technical expertise. We are proud of this reputation, the stability of our operations, and our ability to be innovative yet competitive. Its why weve developed into one of Western Canadas largest suppliers of core boxes and other wooden mining and construction supplies.