The width of all lode claims located after April 13, 1923, may equal but not exceed three hundred feet on each side of the middle of the vein or crevice, and the owners of any lode claims located before April 13, 1923, and having a lesser width, who are desirous of securing the benefit of this section, may file an additional certificate claiming such additional width as provided in this section, if the additional certificate does not interfere with the existing rights of others at the time of filing of the same. No such additional certificate or other record thereof shall preclude the claimants from proving such titles as they may have held under previous location.
C.R.S. § 34-43-102