delivered the opinion of the court.
This case was originally before us in State Board of Equalization v. Kansas-Nebraska Natural Gas Company, Wyo.,
“That thе absorption plant * * * was constructed for the purpose of bringing the natural gas within the specifications required by Kansas-Nebraska Nаtural Gas Company, Inc. for distribution and use by its ultimate consumers, and that any benefits to the interstate transportation of the natural gas necessarily and incidentally followed therefrom.
“That the materials and supplies used and consumed in the construction of the absorptiоn plant * * * were not used or to be used in operating or maintaining interstate transportation, and were not therefore exempt frоm use tax by virtue of Section 39-312(b), Wyoming Statutes 1957 [providing for exemption from use tax of property “which is used or to be used in operating or maintaining interstate transportation”].”
Accordingly, relief was again denied to Kansas-Nebraska and appeal was taken to the district court, which inter alia found that the board’s order was not in conformity with law, that the conclusions were not supported by any specific findings or substantial evidence, and that the decision was arbitrary and characterized by abuse of discretion. The court vacated аnd set aside the board’s order, instructing it to refund the tax paid by Kansas-Nebraska. This appeal has resulted, it being the position of the boаrd that the district court erred in its findings and in substituting its judgment on the evidence for that of the board.
The board now agrees that the legal doctrine of “primary use” is not properly applicable to the instant case since that doctrine comes into play only in situations where there is more than one distinct and independent use,
Kаnsas-Nebraska responds that § 8-18, W.S.1957, provides that words and phrases “shall be taken in their plain or ordinary and usual sense,” and hence when § 39-312 (b) sаys “Property * * * which is used or to be used in operating or maintaining interstate transportation” shall be exempt from the tax, without qualifying or limiting words (suсh as those found in § 39-7, W.S.1957 (1971 Cum.Supp.) ), it could only have intended that property so used not be taxed even though also used for some other purpose. The company further points out that Ohio is the only jurisdiction in which the doctrine of primary purpose has been applied in sales, use, or excise tax cases.
Detailed analysis of the board’s comprehensive arguments as to reasons the trial court should be reversed is not warranted
At the hearing before the bоard, three witnesses had appeared, all officers of the company, and testified in detail as to the whys of building the absorption plant. They clearly delineated the damage by sulphur to the pipeline and associated equipment as well as the dangers of thе presence of liquids in low spots of the pipeline. It was also patent that it was the desire of the company to provide a more satisfactory gas for consumer consumption than had previously been provided. The present findings of the board implicitly, and thе argument of its counsel now before us specifically, indicate that when these witnesses testified the plant to have been necеssary so that the gas could be both economically and safely transported the board considered that portion of their testimony “not creditable” and not “worthy of adoption,” but nevertheless based its findings and conclusions on other portions of these same witnesses’ testimony. Under the situation here such was improper. The rule that the credibility of witnesses is for the trier of fact does not mean that such triеr may under the guise of passing upon the credibility of a witness disregard his testimony when from no reasonable point of view is it open to doubt. Chеsapeake & Ohio Railway Company v. Martin,
Affirmed.
Notes
. Michigan Allied Dairy Ass’n v. Auditor General,
. Respondent cites various Ohio cases, including Mead Corporation v. Glander,
