No. 
          96-368
         IN THE SUPREME COURT 
          OF THE STATE OF MONTANA
          
          1997
        
        LIBERTY NORTHWEST 
          INSURANCE CORP.,
         Petitioner and Appellant,
        STIMSON LUMBER COMPANY,
         Employer and Appellant,
         v.
        CHAMPION INTERNATIONAL 
          CORP.,
         Respondent and Respondent.
        
        
          APPEAL FROM: Workers' Compensation Court for the State of Montana
          The Honorable Mike McCarter, Judge presiding.
        
          COUNSEL OF RECORD:
         For Appellants:
         Larry W. Jones, 
          Senior Attorney; Liberty Northwest Insurance
          Corp.; Missoula, Montana
         For Respondent:
         Bradley J. Luck; 
          Garlington, Lohn & Robinson;
          Missoula, Montana
        
         Submitted on Briefs: 
          February 13, 1997
         Decided: October 
          10, 1997
          Filed:
        
          __________________________________________
          Clerk
          Justice Terry N. Trieweiler delivered the opinion of the Court.
        The petitioner, 
          Liberty Northwest Insurance Corporation, which insures the
          Stimson Lumber Company against workers' compensation claims, filed a 
          petition in the Workers' Compensation Court of the State of Montana 
          in which it sought a decision from that court that the disability of 
          Stimson's employee, Ronald Deschamps, was the result of an injury he 
          sustained while employed by Champion International Corporation and, 
          therefore, that Liberty was entitled to indemnification for benefits 
          it paid to Deschamps. 
        The Workers' 
          Compensation Court held that Deschamps' disability was related to
          activities he performed while employed by Stimson and, therefore, that 
          Liberty is not
          entitled to indemnification. Liberty appeals from that decision. We 
          affirm the judgment of the Workers' Compensation Court.
        
          The dispositive issue on appeal is whether the Workers' Compensation 
          Court's
          finding that Deschamps' disability was caused by work-related activities 
          performed during the course of his employment with Stimson Lumber Company 
          is supported by substantial evidence.
        FACTUAL BACKGROUND
        The parties 
          agree that Ronald Deschamps injured his lower back on March 30,
          1992, while working for Champion International in Missoula. His treating 
          physician,
          Michael A. Sousa, M.D., diagnosed degenerative disc disease with a slight 
          bulge in the disc between his fifth lumbar vertebra and his first sacral 
          vertebra. Champion accepted liability for Deschamps' injury and paid 
          his medical and disability benefits. 
        By June 25, 
          1992, Dr. Sousa's records indicate that Deschamps had regained full
          range of motion and that most of his pain was gone. On July 6, 1992, 
          he released
          Deschamps to return to work at Champion as a millwright with no restrictions. 
          
          By November 17, 1992, Dr. Sousa described Deschamps' problems as "minimal." 
          
          On January 28, 1993, Dr. Sousa verified, in a letter to Champion, that 
          Deschamps had reached maximum medical improvement and that his condition 
          was stable. At that time, he had pain at the extreme extensions of his 
          range of motion, but otherwise appeared to be doing well.
        
          Although Deschamps was employed by Champion as a millwright, which was
          classified as a heavy duty job and involved machinery repair, he had 
          been limited to
          lighter duty carpentry work since undergoing an angioplasty in 1990. 
          When he returned to work following his back injury in July 1992, it 
          was as a light duty carpenter. 
        During early 
          November 1993, Champion's Missoula mill was purchased by
          Stimson Lumber Company. Shortly before that purchase, or shortly thereafter,
          Deschamps was given a pre-employment medical examination to assure that 
          he was physically capable of performing a millwright's duties. As a 
          result of that examination, he was found to be qualified to work as 
          a millwright without restrictions. 
        Deschamps continued 
          working at the mill following Stimson's takeover. For the
          first several months, he continued to work as a light duty carpenter; 
          however, eventually he was assigned to heavier duty millwright work. 
          Following the change in his work activities, his back became progressively 
          worse. On June 8, 1995, Deschamps was told by Dr. Sousa that he could 
          no longer continue working as a millwright due to his low back pain. 
          He has not returned to work since that time.
          During 1994, Deschamps sought additional benefits from Champion due 
          to the
          physical problems he was experiencing; however, Champion denied liability. 
          In 1995, Liberty accepted liability for Deschamps' claim as an occupational 
          disease. However, on July 20, 1995, Liberty requested that Champion 
          accept liability for Deschamps' disability. Champion declined to do 
          so. 
        After a hearing 
          at which Deschamps and Dana M. Hedapohl, M.D., testified, and
          after consideration of the testimony of Dr. Sousa by deposition, the 
          Workers'
          Compensation Court found that Deschamps' work for Stimson accelerated 
          and
          significantly aggravated his preexisting degenerative disc disease, 
          and that his disabilitywas not a mere result of the natural progression 
          of his underlying condition and,therefore, concluded that Stimson was 
          not entitled to indemnification from Champion.
        DISCUSSION
        Was there 
          substantial evidence to support the Workers' Compensation Court's
          finding that Deschamps' work for Stimson Lumber Company accelerated 
          and significantly aggravated his preexisting degenerative disc disease, 
          and that his disability is not the result of a natural progression of 
          his underlying condition?
        We review the 
          Workers' Compensation Court's findings of fact for substantial
          credible evidence. See Buckentin v. State Comp. Ins. Fund (1994), 265 
          Mont. 518, 520, 878 P.2d 262, 263. If there is conflicting evidence, 
          we consider whether substantial evidence supports the court's findings, 
          not whether other evidence supports contrary findings. See Buckentin, 
          265 Mont. at 520, 878 P.2d at 263. 
        Where medical 
          testimony is offered by deposition, this Court is in as good a position 
          as the trial court to determine the weight of the medical testimony. 
          However, deposition testimony must be reviewed in the context of testimony 
          from other witnesses who gave testimony that the trial court did, in 
          fact, have an opportunity to observe. See McIntyre v. Glen Lake Irrigation 
          Dist. (1991), 249 Mont. 63, 67, 813 P.2d 451, 454.
        In Caekaert 
          v. State Compensation Mutual Insurance Fund (1994), 268 Mont. 105,
          111, 885 P.2d 495, 499, we noted that:
       
       
        It was based 
          on this finding, and its application of the Caekaert decision to this
          finding, that the Workers' Compensation Court concluded that Stimson 
          was liable for Deschamps' disability. We conclude, therefore, that the 
          Workers' Compensation Court did not misapply the Caekaert decision.
        
          Stimson's second and principal contention on appeal is that Finding 
          No. 59 is not
          supported by substantial evidence. However, after our review of the 
          record, we conclude that there was, in fact, substantial evidence to 
          support the Workers' Compensation Court's finding that Deschamps' current 
          disability is related to his work activities on behalf of Stimson.
        Deschamps testified 
          that by March 1993 his physical problems from his 1992
          injury had stabilized and were minimal. However, when he saw Dr. Sousa 
          again in April 1994 after he had been working for Stimson for nearly 
          six months, he had different problems than before and was not doing 
          as well as he had been. He was experiencing pain in his hip, left leg, 
          and right groin. He testified that his back-related physical limitations 
          changed dramatically from November 1, 1993, to June 1995 when he was 
          taken off work. He could do the work he was released to do in November 
          1993. He could not do the work in June 1995.
        Deschamps testified 
          that when he started working for Stimson following the
          pre-employment physical examination done on behalf of Stimson, he was 
          able to and was authorized to work without restriction. However, by 
          the time he left his job he could no longer perform his responsibilities. 
          Finally, he expressed the opinion that the work he did while employed 
          by Stimson did make his condition worse.
        Finally, during 
          his deposition, Deschamps gave the following testimony: