“ This statute provides a summary method for the purpose of insuring the proper contribution of co-owners among themselves in the working of the mine, and it provides a means by which a delinquent co-owner may be compelled to contribute his share, under the penalty of losing his right and title in the property because of such failure. It was not necessary, in our judgment, that the notice should specifically name the heirs of the deceased owner. The act does not require it. ”

“ The co-owner who did the work might not know who the heirs were, and it might be impossible for him to learn their names or whereabouts, and the statute never contemplated that the man who did the work should be prevented from obtaining the benefit of the statute by his inability to learn who the heirs were and where they lived. A general address to the heirs of the person named, and the proper publication of the notice, is sufficient. ”