The remnants of a roll of the famous Chalk River “yellow” duct tape. This tape, which was generally recognized as the “best duct tape ever,” was used widely on the site. The 5 cm wide tape had a wide variety of uses. In particular, it was used in the active area for taping over the cuffs of clothing to decrease the possibility of loose clothing coming into contact with radioactive material. The yellow colour was chosen to make it distinctive and less susceptible to “accidentally” leaving the laboratories and being used in private homes. Nevertheless, it often appeared at winter events held in Ottawa Valley arenas where it was reported to be excellent for usage with hockey gear.