METAL - The Law Mind Legal Dictionary

METALAuthored

The Law Mind • 993 words

Definition

In legal contexts, "metal" refers to elemental metallic substances in their recognizable, commercially understood form — but the term carries important limiting constructions imposed by courts and customs authorities that differ from scientific usage.

Two distinct legal meanings emerge from the case law and statutory interpretation:

1. Metal as a raw or elemental substance. In its primary legal sense, metal denotes the elemental or alloyed material itself — iron, copper, lead in metallic form, and similar substances with recognizable metallic properties: luster, conductivity, malleability, and ductility.

2. Metal in tariff and trade classification. In the context of customs duties, revenue statutes, and trade schedules, courts have repeatedly been called upon to determine what falls within the category of "metals" or "manufactures of metals." Here the term is narrower than its scientific counterpart. Processed compounds — even those derived from metallic elements — do not necessarily qualify. White lead, nitrate of lead, oxide of zinc, and dry or orange mineral have been held to fall outside the category of metals because they have lost their metallic qualities through chemical transformation.

Common Language

Modern common usage (Wiktionary): In contemporary informal usage, "metal" is most prominently associated with heavy metal music — characterized by strong drum-beats and distorted guitars — and the cultural identity surrounding it (brash, bold, unyielding).

Historical common usage (Webster's 1913): An elementary substance — such as sodium, calcium, or copper — whose oxide or hydroxide has basic rather than acid properties, as contrasted with nonmetals or metalloids. Also used by miners to refer to ore from which a metal is derived.

The gap here is significant for legal research. The scientific definition (Webster's 1913) is broad enough to include elemental metals and their chemical compounds. Courts interpreting tariff schedules and trade statutes rejected that breadth, holding that chemical transformation strips a substance of its legal identity as a "metal" even when its elemental origin is metallic. A researcher who reads "metal" in a statute through a chemistry lens may reach a different conclusion than the courts did.

Common Confusion

The most persistent confusion in this area involves the distinction between a metal and a manufacture of metals. "Manufactures of metals" has been interpreted to include manufactured articles in which metals form a component part — a broader category that can sweep in finished goods made partly of metal. "Metal" itself, in customs contexts, was construed more narrowly to exclude chemically processed derivatives. Researchers should not assume that a product containing or derived from a metallic element will be classified as a "metal" under statutory schedules.

Why It Matters in Research

The legal significance of "metal" arises almost exclusively in tariff and customs classification disputes, mining law, and occasionally in contract interpretation where goods are described by material composition. Researchers working in nineteenth- and early twentieth-century federal case law will find that much of the definitional work was done in customs and revenue contexts, not in common law doctrine.

The critical trap: statutory and regulatory uses of "metal" in historical sources often track the understanding of trade and commerce, not the scientific periodic table. A substance that a chemist in 1880 would call a metal compound may have been excluded from the "metals" category by courts applying tariff schedules. The leading judicial treatment — drawing the line at substances that retain metallic qualities versus those chemically transformed — means the factual record of how a substance looks, behaves, and is traded commercially matters as much as its elemental origin.

Researchers working across jurisdictions or time periods should also distinguish between:
— Federal customs and tariff contexts (where the bulk of definitional case law sits)
— State mining law contexts (where "metal" may be defined by statute or regulation specific to mineral extraction)
— Contract and commercial law contexts (where ordinary trade usage typically governs)

The corpus connection to mining law is important: in mining statutes and leases, "metal" or "metallic minerals" sometimes appears in contrast to "nonmetallic minerals" or "industrial minerals," with different royalty, leasing, and severance tax consequences.

Historical Dictionary Support

Bouvier's entry is terse but precise, and its precision is its value. Two propositions are laid down: first, "metal" does not include precious metals — a conclusion that strikes modern readers as counterintuitive but reflects particular statutory construction in the context under review. Second, "manufactures of metals" extends to manufactured articles in which metals form a component part, and chemically processed derivatives (white lead, nitrate of lead, oxide of zinc, orange mineral) are excluded from the metal category because they lack metallic qualities.

Bouvier does not attempt a comprehensive definition of metal as a legal term. The entry is entirely instrumental — built around resolving classification disputes rather than defining the substance conceptually. This is characteristic of how nineteenth-century legal dictionaries treated scientific or commercial terms: courts did not define them abstractly but resolved specific inclusion/exclusion questions as they arose.

What Bouvier does not address: the distinction between metal in its raw state and metal as an alloy; the treatment of metal in mining law versus customs law; and the evolution of tariff schedules across successive revenue acts that may have shifted how courts interpreted the term over time. Researchers should not treat the Bouvier entry as exhaustive of the legal meaning across all contexts.

Jurisdictional Note

The definitional case law on "metal" developed primarily in the federal courts interpreting revenue and customs statutes, meaning it binds interpretation of federal tariff schedules but does not necessarily control under state mining codes or commercial statutes that use the term independently. State mining jurisdictions — particularly in the American West — developed their own regulatory vocabulary around metallic versus nonmetallic minerals that may diverge from the customs classification framework.

METALmain

Bouvier's Law Dictionary • 1928

The word does not include precious metals. 2 B. & Ad. 597. "Manufactures of metals" refers to manu- factured articles in which metals form a component part. White lead, nitrate of lead, oxide of zinc, and dry or orange mineral are not metals; they have no metallic qualities. 91 U. S. 576, 577.

METALn.

Websters Unabridged Dictionary (1913) • 1913

An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmetals, or metalloids. No sharp line can be drawn between the metals and nonmetals, and certain elements partake of both acid and basic qualities, as chromium, manganese, bismuth, etc. Ore from which a metal is derived; -- so called by miners. Raymond. A mine from which ores are taken. [Obs.] Slaves . . . and persons condemned to metals. Jer. Taylor. The substance of which anything is made; material; hence, constitutional disposition; character; temper. Not till God make men of some other metal than earth. Shak. Courage; spirit; mettle. See Mettle. Shak. The broken stone used in macadamizing roads and ballasting railroads. The effective power or caliber of guns carried by a vessel of war. Glass in a state of fusion. Knight. The rails of a railroad. [Eng.] Base metal (Chem.), any one of the metals, as iron, lead, etc., which are readily tarnished or oxidized, in contrast with the noble metals. In general, a metal of small value, as compared with gold or silver.  -- Fusible metal (Metal.), a very fusible alloy, usually consisting of bismuth with lead, tin, or cadmium.  -- Heavy metals (Chem.), the metallic elements not included in the groups of the alkalies, alkaline earths, or the earths; specifically, the heavy metals, as gold, mercury, platinum, lead, silver, etc.  -- Light metals (Chem.), the metallic elements of the alkali and alkaline earth groups, as sodium, lithium, calcium, magnesium, etc.; also, sometimes, the metals of the earths, as aluminium.  -- Muntz metal, an alloy for sheathing and other purposes, consisting of about sixty per cent of copper, and forty of zinc. Sometimes a little lead is added. It is named from the inventor.  -- Prince's metal (Old Chem.), an alloy resembling brass, consisting of three parts of copper to one of zinc; -- also called Prince Rupert's metal.

METALv.

Websters Unabridged Dictionary (1913) • 1913

To cover with metal; as, to metal a ship's bottom; to metal a road.

metaladj

Wiktionary (English) • 2026

Wiktionary contributors • CC BY-SA 4.0 • via Kaikki
Extracted and formatted for display by Law Mind. Source link opens the current Wiktionary page and its contributor history; it is not a frozen copy of this extract.

Characterized by strong drum-beats and distorted guitars. | Having the emotional or social characteristics associated with metal music; brash, bold, frank, unyielding, etc.

metalnoun

Wiktionary (English) • 2026

Chemical elements or alloys, their ores, and the mines where their ores come from. | Any of a number of chemical elements in the periodic table that form a metallic bond with other metal atoms; generally shiny, somewhat malleable and hard, often a conductor of heat and electricity. | Chemical elements or alloys, their ores, and the mines where their ores come from. | Any material with similar physical properties as those chemical elements, especially as a combination of several of them, such as an alloy. | Chemical elements or alloys, their ores, and the mines where their ores come from. | An element which was not directly created after the Big Bang but instead formed through nuclear reactions; any element other than hydrogen and helium. | Chemical elements or alloys, their ores, and the mines where their ores come from. | Crushed rock, stones etc. used to make a road. | Chemical elements or alloys, their ores, and the mines where their ores come from. | The ore from which a metal is derived. | Chemical elements or alloys, their ores, and the mines where their ores come from. | A mine from which ores are taken. | A light tincture used in a coat of arms, specifically argent (white or silver) and or (gold). | Molten glass that is to be blown or moulded to form objects. | A category of rock music encompassing a number of genres (including thrash metal, death metal, heavy metal, etc.) characterized by strong drumbeats and distorted guitars. | The substance that constitutes something or someone; matter; hence, character or temper. | The effective power or calibre of guns carried by a vessel of war. | The rails of a railway. | The actual airline operating a flight, rather than any of the codeshare operators.

metalverb

Wiktionary (English) • 2026

To make a road using crushed rock, stones etc.

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