Abstract: A chalk line device adapted to receive chalk from a chalk refill container, the chalk line device includes a body defining at least one opening and a chalk line disposed within the body. A mounting structure provided adjacent the opening is configured to engage the chalk refill container in a sealed manner, whereby chalk in the chalk refill container may be emptied into the chalk line device generally without spillage through engagement of the mounting structure to the chalk refill container. The refill container has a flange extending along its opening, and is sealed with a removable cover. A door is slidably mounted within the mounting structure such that opening and closing of the door is coordinated with coupling/decoupling of the refill container.