The question here presented is whether or not a firm of road contractors is engaged 1 in industrial processing within the meaning of section 4(g) of the use tax act. 2
There is no dispute about the facts. The appellants build concrete highways under contract with the Michigan State highway department. They prepare the rough grades and the roadbed, they pave, and they finish. In so doing they use, and eventually consume, mаjor equipment, such as bulldozers, repair parts, and necessary appurtenances, such as tirеs, tubes, and batteries. This is an action for *160 declaratory judgment, its purnose being to determine the liability of thе appellants for use-tax assessments on these articles of tangible personal property. The case comes to us under a stipulation set forth in part in the margin here. 3
Appellants first examine “the entire structure of use and sales acts” and list “four primary evils which might otherwise result from a universal sales tax.” They then seek to demonstrate that exemption of this property from such tax or the use tax would avoid each of such evils. Without passing upon the validity of the arguments made, we note only that distinguished еconomists and tax experts have for years argued the economic justifications for, and the аlleged evils resulting from, both the taxes (sales and use) and the exemptions thereto. 3 4 We do not propose to enter this arena of debate. The tax structure is for the legislature. It has imposed a use tаx and has granted the “industrial processing” exemption. Our problem is one of interpretation.
It is true, as аppellants urge, that they are engaged in an “industrial” pursuit. It is also arguable, although the meaning is strained, that in building highways they “process” real estate. Thus by the simple mechanism of verbal addition they would have us conclude that we have before us a case of industrial processing. But the words “industrial processing,” althоugh undefined in the act, have received a gloss of interpretation over the years and unless we are prepared to overrule the previous cases (and we are not persuaded of their error) we will not approach *161 the problem independently but will be guided by them.
We have examined the problem with care in 2 recent cases, the first involving the softening of water.
Kress
v.
Department of Revenue,
The later case of
Bay Bottled Gas Co.
v.
Department of Revenue,
“‘to subject (especially raw material) to a process of manufacturing, development, preparation for the market, et cetera; to convert into marketable form, as livestock by slaughtering, grain by milling, cotton by spinning, milk by pasteurizing, fruits and vegetables by sorting and repacking.’ ”
As we said recently in
Romeo Homes, Inc.,
v.
Commissioner of Revenue,
Affirmed. No costs, a public question.
Notes
Appellants use the expression “in whole or in part.” We find no basis upon this record for the “in part” qualification.
CL 1948, § 205.94, subd (g), as amended (Stat Ann 1950 Her § 7.555[4], subd [g.], as amended).
“It is further stipulated that thе court may forthwith enter a declaratory judgment in accordance with the foregoing stipulations, * * * but without prejudice to the right of the plaintiff to take an appeal to the Supreme Court of the State of Michigan upon the sole issue of whether or not all or any part of the remaining tax liability is exеmpt under section 4(g) of the use tax aet, relating to industrial processing.”
See, e.g., Consumption Taxes, 8 Law & Contemp Prob 415.
Michigan Allied Dairy Ass’n
v.
State Board of Tax Administration,
