4. This division shall apply to mining companies existing on the 23rd of March, 1900, and to those incorporated under chapter 33 of the statutes of 1900, under articles 6743 to 6761 of the Revised Statutes of 1909, under chapter 82 of the Revised Statutes of 1925, under chapter 197 of the Revised Statutes of 1941, under chapter 283 of the Revised Statutes of 1964 or under this act.
R. S. 1964, c. 283, s. 4.