delivered the opinion of the Court.
This is аn appeal by Suburban Propane Gas Corporation, the taxpayer, appellant, from an order-of the Circuit Court for Montgomery County, affirming a final determination of the Comptroller of the Treasury, (the Comptroller), appellee.
The taxpayer, a body corporate, filed an application for exemption frоm the use tax of cylinders, meters, regulators, valves, cylinder caps, delivery truck cylinders, and miscellaneous items used in the sale of propane gas, under the provisions of Code, (1951), Article 81, Section *85 370 (f), and Rule 62 of the Comptroller relating to the Maryland Retail Sales and Use Tax Acts, which follow:
“370. (Exemptions) The use, storage or consumption in this State of the following tangible personal property is hereby specifically exempted from the tax imposed by this sub-title: * * * (f) Tangible personal property not readily obtainable in Maryland which is stored, used or consumed in this State by a person engaged in the business of rendering services, or manufacturing, compounding for sale, profit or use of any article, substance or commodity, if such tangible personal property enters into the processing of or becomes an ingredient or component part of the product or service which is manufactured, compounded or furnished and the container, label or the furnished shipping case thereof.”
“Rule 62: Tangible personal property which is used, stored or consumed in Maryland, the sale of which is not subject to the sales tax, will not be subject to the use tax if: (a) The property is not readily obtainable in Maryland; and (b) The property is used by a person engaged in the business of rendering services, or manufacturing, compounding for sale, profit or use any article, and (c) The property enters into the processing of or becomes an ingredient or component part of thе product or service which is manufactured, compounded or furnished, or the container label, or the furnished shipping case thereof. * *' * For the purpose of this rule property will be considered as entering into the processing of the product or service which is manufactured, compounded or furnished if the property is employеd either directly or indirectly in the manufacturing, processing or compounding of property for sale or the furnishing of services for sale.” (Italics supplied here).
*86 A hearing was held before the Comptroller on the taxpayer’s application. The testimony shows that the taxpayer purchases propane in liquid form, a derivative of petroleum, from the original producers thereof and stores the liquid in large storage tanks at principal distribution points. It is admitted that the equipment used and sought to be excepted is not readily obtainable in Maryland. Although as a general rule when the liquid propane is purchased it is already mixed with ethyl mercaptan, an odorant, as specified by the taxpayer, from time to time it adds ethyl mercaptan, when needed, as a safety measure. The taxpayer also mixes methanol with the liquid propane in order to prevent water therein from freezing, while being converted from a liquid to a gaseous form. The liquid propane under variable, high pressure is brought by the taxpayer to the сonsumer’s premises, either in tank trucks or in tanks or bottles. When it is delivered by tank trucks it is transferred by a hose to tanks or bottles, owned by the taxpayer and which remain its sole and exclusive property, repaired and maintained by it, on consumer’s premises. When it is delivered in bottles, taxpayer’s full bottle is exchanged for the empty one. In order to convert the liquid propane into gaseous form, usable by the consumer, the taxpayer has a valve- or regulator in the bottles or tanks on the consumer’s property. The size of these tanks, bottles, valves, and regulators depends upon the number, location and size of the appliances used by the consumer. The purpose of the valves and regulators is to reduce the pressure on the liquid in the tank or bottle. As the liquid is drawn through the valve or regulator, the pressure being reduced, the liquid propane vaporizes and becomes a gas ready for use. In practically all cases the gas passes through a meter where it is measured and the consumer pays for the amount shown оn the meter. The B.T.U. content of the gas is precisely the same when delivered to the consumer as when delivered to the taxpayer. The addition of the methanol does not form a new gas. From these *87 facts the Comptroller concluded that the adding of the odorant and the anti-freeze and the changing from liquid propane to gaseous propane did not constitute compounding or manufacturing. From that decision the taxpayer appealed under the provisions of Code, (1951), Article 81, Section 348, to the Circuit Court for Montgomery County. The case was there decided on the facts set out in the opinion of the Comptroller. The trial judge found that there was a grave and sеrious doubt as to whether or not the taxpayer was engaged in “manufacturing” or “compounding”, and construing the exemption strictly against the taxpayer, by order affirmed the action of the Comptroller. From that order the taxpayer appeals.
As the taxpayer must show that it manufactures or compounds before it takes advantagе of “processing”, the question here presented is whether the addition of the odorant and anti-freeze to the liquid propane and the reduction of the pressure on the liquid propane in order to produce gaseous propane, constitutes manufacturing or compounding within the meaning of Section 370 (f), supra, and Rule 62, supra.
Of course, tax exemption statutes are to be strictly construed in favor of the State. The taxing power is never presumed to be surrendered. Every assertion that it has been relinquished must, to be effective, be distinctly supported by clear and unambiguous legislative enactment. To doubt an exemption is to deny it.
Clarke v. Union Trust Co. of D. C.,
The taxpayer claims that the adding of the odorant for safety purposes, specified in its purchase, but oc *88 casionally done by the taxpayer when found that the odor is not sufficient, and the adding of the methanol to. prevent freezing, constitutes compounding within the meaning of the statute. Taxpayer cites no authority for this conclusion but relies on the following definitions:
“Webster’s New International Dictionary, (1950 Ed.), defines ‘Compound’ as: 1. To put together, as elements, ingredients, or parts to ■form a.whole; to combine; unite. 2. To form or make up, as a composite product, by combining different elements, ingredients, or parts; as, to compound a medicine.”
“Funk & Wagnalls New Standard Dictionary, (1949 Ed.), defines the word ‘Compound’ as:-1. To make, by the intermingling- or intimate combination of various elements or ingredients; combine or intermix as to form a composite product; as, to compound an ointment; * * *■ 2. To mix, combine, or put together (various ingrediеnts, elements, or parts), to form a compound substance, word, or thing; as, to compound drugs. * * *”
“New Century Dictionary, (1936 Ed.), gives •as a definition of the word ‘Compound’: To-put together into a whole; combine; also, to make or form by combining parts, elements,etc.” .
It was admitted by the vice-president and general- manager of the taxpayer that the addition of these twо' substances did not change the B.T.U. content of' the gas and that the gas when delivered to the consumer was substantially the same gas as delivered- to the taxpayer. We are therefore of opinion that it is extremely doubtful whether the mixture here meets the definitions of “compounding” relied on by the appellant.
The question is therefore further limited to whether the reduction of the pressure on the liquid propane in taxpayer’s containers, in order to produce gaseous pro *89 pane for the consumer, constitutes manufacturing within the meaning of the aforesaid legislative enactments.
In the case of
Carlin v. Western Assurance Co.,
In
State v. Alabama Gas Corp.,
(Alabama), 62 S. 2d 454, it was held that regulators, used by gas companies to reduce gas pressure at each house so that the gas was usable, were appliances used for “processing” the gas. No contention was there made that such regulators
*90
were used in compounding or manufacturing. See also
Southern Natural Gas Co. v. Alabama, P.-H., Sales and Use Tax Service,
Paragraph 23,085, decided November 19, 1953, on rehearing at this time. In
State, ex rel, Minneapolis Gaslight Co. v. Lord,
(Minnesota),
The case of
Consolidated Gas Co. v. Baltimore,
“The gasometer is a huge, air-tight reservoir for the storage of the gаs thus produced, and the pressure which is necessary to force the gas through the mains to the consumer. The pressure is generated by the exhauster, which forces the gas through the purifiers into the gasometer. The gasometer being automatic, it rises or falls according to the supply and consumption of gas, the pressure which is communicated to it by the exhauster being regulated and modified by what is called a governor inside of the gasometer. The gas when it passes into the gasometer is *92 ready for illumination, and all that is required to make.it available for use is pressure sufficient to force it through the mains and pipes to the house of the consumer, then coming into contact with the oxygen in the air, it becomes, when lighted, an illuminating gas. This pressure is furnished, as we have said, by the exhauster, communicated to the gasometer and regulated according to the supply and consumption by the governor. If this be so, then it is clear that the gasometer performs no function whatever in the manufacture of the gas. itself. It is used merely for the storagе of gas, and the pressure necessary for its distribution.”
In
Electric Light Co. v. Frederick City,
In
Carroll County v. Shriver Company,
“It is difficult to say in the abstract what is аnd what is not a manufacturing industry. What *93 might be a manufacturing industry when defined or construed in connection with a statute exempting tools, machines, engines, etc., from taxation, might not be so held when considered in connection with a statute having a different object or purpose. As said in 26 Cye. 524: ‘There is of course a multitude of cases in which particular industries and prоducts have been held respectively to be or not to be manufacture, but it would be useless to cite these cases under the names of the industries or products there the subject of decision; * * * since the fact that a given thing or industry has been held to be manufacture under one set of circumstances, is no assurance that it will be so held under anоther.’ ”
In
H. M. Rowe Co. v. State Tax Commission,
If the rising and falling of pressure in the gasometers in Consolidated Gas Co. v. Baltimore, supra, performed no function whatever in the manufacture of gas, it is at least doubtful that the lowering of pressure on the liquid propane in the instant case constitutes manufacturing of gas. To so hold, as pointed out by the аppellee, would be to hold that the passage of gasoline through the carburetor of a car causing vaporization was manufacturing. It is difficult to see the difference between the raising and lowering of electrical voltage by a transmitter and the lowering of the pressure on liquid propane. Finding that' it is at least doubtful *94 whether the operation in this case amounts to compounding or manufacturing, under the authorities herein cited, the order will be affirmed.
Order affirmed, with costs.
