Tbe appeal under consideration is by the Pacific Employers Insurance Company, Carrier of Insurance for the Interstate Granite Company. The controversy is between the Bituminous Casualty Company, appellant, sometime carrier for the Granite Company during the employment of the plaintiff’s intestate, now appellee, and the Pacific Company, appellant, carrier when the employee quit work. The employer, the Granite Company, did not appeal; and since the sole question involved is which of the carriers is liable under the risk, and subject to payment of the award, which is not assailed, the plaintiff administratrix is not concerned with the result.
The subject award was made under a claim filed by Bye before the Industrial Commission March 3, 1941, for compensation for total and permanent disability caused by silicosis contracted in the course of employment as a granite stone cutter through the inhalation of silica dust. A hearing was had before Commissioner Burén Jurney, upon which hearing findings of fact were made and award adverse to the Pacific Company, and appeal was made by it to the full commission. There the award was again adverse, exonerating the Bituminous Company and fixing liability on the appellant. From this award the Pacific Company appealed to the Superior Court of Mecklenburg County, where the award of the Commission was affirmed; and the Pacific Company appealed to this Court.
Pertinent to this appeal, the Workmen’s Compensation Act, G.S. 97-57, provides:
“In any case where compensation is payable for an occupational-disease, the employer in whose employment the employee was last injuriously exposed to the hazards of such disease, and the insurance *336carrier, if any, which was on the risk when the employee was so last exposed under such employer, shall be liable.”
Silicosis is a progressive and often fatal condition similar to asbesfosis which latter was formerly recognized as compensable under the more general provisions of the statute as an accident arising out of, and in the course of employment. McNeely v. Asbestos Co., 206 N.C. 568, 174 S.E. 451. By amendment to the law, silicosis, along with other- occupational diseases named, was made compensable in the same manner as an injury by accident arising out of and in the course of employment.
Obvious difficulties in fixing liability for compensation during successive periods, or stages, of employment, no doubt led to the present law which predicates the liability on the last exposure, providing it is as much as 30 days, and makes no provision for sharing liability with former employers, or carriers on previous risks, or pro rating the award. The sole liability is upon the carrier which was “on the risk” — that is, insurer —for the period of last exposure, as defined and limited in the act. Haynes v. Feldspar Producing Co., 222 N. C., 163, 22 S.E. 2d 275; G.S. 97-57, supra.
This much we do not understand appellant to dispute. It does, however, ask serious consideration of the contention that prior to the filing of the present claim, and before it became carrier, and while Bituminous was still “on the risk,” all the facts and conditions entitling the employee to compensation for total disability bad supervened; and that certain letters, or communications made by Bye, the employee, to the Industrial Commission, and the answers thereto amounted, in law, to a filing of Bye’s claim as employee, and assumption of jurisdiction by the Industrial Commission; and that the more formal claim made thereafter was nugatory, and fixed no liability on Pacific Company, which became carrier thereafter; citing Hardison v. Hampton, 203 N. C. 187, 165 S.E. 355; Hanks v. Utilities Co., 210 N.C. 312, 186 S.E. 252; and several cases from other jurisdictions, to which our attention has been given. It is further contended that under Gr.S. 97-61, it was the duty of the Industrial Commission, under the reports made by the examining physician, to remove Bye from the employment and whatever claim he might have dates from that time and pertains to the Bituminous Company, then on the risk.
In this connection the appellant presents the examinations made of Bye from time to time, showing the beginning and progress of his silicosis disease, his notification thereof, and the advice given him in regard to quitting the occupation, or going into something else. These examinations are compulsory, and are made from time to time, and reports thereof filed, by authority of G-.S. 97-61.
*337We find that be was advised by tbe Industrial Commission to seek new employment because of reports made to tbe Commission by tbe examining physician, but that because of bis age be was advised by tbe Commission (May 29, 1946), “because of your age and long exposure tbe Industrial Commission is leaving it to your own judgment; but to inform you of your rights, tbe Commission is sending you a copy of tbe Workmen’s Compensation Law, and call to your attention Sections 97-54 through 97-71, and particularly Section 97-61.” Tbe cited section applies not only to compensation but to rehabilitation. Tbe inquiry of Bye seemed rather to debate tbe question whether be should abandon tbe only employment be knew anything about, or seek rehabilitation under the statute; and we do not find it significant as affecting tbe validity of tbe claim and award. No order was made by tbe Commission and we cannot find that tbe situation made it compulsory in law, or deprived tbe Commission of sound discretion.
Bye bad been working, intermittently, for tbe Granite Company since 1941. His last resumption of work began in January, 1947, and lasted 39 days. Tbe claim was filed in apt time thereafter.
Tbe only findings of facts essential to tbe validity of tbe award were supported by competent evidence, and are binding on us; Morgan v. Cloth Mills, 207 N.C. 317, 177 S.E. 165; Graham v. Wall, 220 N.C. 84, 16 S.E. 2d 691; Archie v. Lumber Co., 222 N.C. 477, 23 S.E. 2d 834; and we find no reason to challenge tbe conclusion reached.
Tbe judgment of tbe Superior Court is
Affirmed.