Section 42
SEC. 42. In addition to the requirements of sections forty and forty-one of this Act with regard to the placing of posts number one and two on the line of location, and to the marking of the line between them, each locator of the lode mineral claim shall blaze trees along the boundary line thereof by clearing or by marking the same with any other readily distinguishable signs or marks, and shall establish each of the four corners of the claim by marking a standing tree or rock in place, or by setting in the ground, when practicable, a post or stone. Each corner shall be distinctly marked with the name of the claim, the name of the locator, and the date of location, and with such words as to indicate that it is the northeast, southwest, or other corner, as the case may be, of the lode mineral claim concerned, and the posts or stones used to mark such corners shall be as follows: When a post is used, it must be at least fifteen centimeters in diameter or twelve centimeters on each side by one hundred forty centimeters in length, and where practicable, set forty centimeters in the ground and surrounded by a mound of earth or stone, one hundred twenty-five centimeters in diameter by sixty-five centimeters in height; when a stone, not a rock in place is used, it must not be less than thirty-five centimeters on each side by eighty centimeters in length, and must be set so as to project half its length above the ground; when a stone or rock in place is used, a cross must be cut in the stone, the arms of which cross must be at least twelve centimeters long, intersecting approximately at right angles and in their centers, the cutting to be at least two centimeters deep. The intersection of the arms shall constitute the corner.