Definition
Mines, in property and resource law, refers to excavations or workings in or under land from which minerals, ores, coal, stone, or other valuable subsurface materials are extracted, as well as the legal rights associated with such extraction. The term operates at several levels simultaneously: as a physical description of the place of extraction, as a category of property interest, and as a subject of conveyance, reservation, and taxation.
1. As a physical thing: A mine is the underground or surface workings by which minerals are removed from the earth. This includes shafts, tunnels, adits, drifts, and open-pit operations, along with the surface structures necessary for operation.
2. As a property interest: Rights to mines may be severed from surface ownership, held separately, conveyed, devised, mortgaged, or leased. What passes by a grant or reservation of "mines" is a recurring interpretive problem in deeds and wills — the word may or may not encompass undiscovered mineral deposits, surface access rights, or appurtenant structures depending on the instrument and jurisdiction.
3. As a subject of regulation: Mines are subject to distinct bodies of law governing safety, environmental impact, labor conditions, and the rights of competing claimants — including surface owners, mineral rights holders, and the sovereign.
Common Language
Modern common usage (Wiktionary): The Wiktionary entry provided here is the verbal form — "mines" as the third-person singular of the verb "to mine." In common use, "mine" also refers colloquially to any pit or excavation from which materials are dug, or informally to an explosive device.
Historical common usage (Webster's 1913): Webster's 1913 defines a mine as an excavation in the earth from which metallic ores, coal, or other mineral substances are taken, and also the body of ore or mineral in place.
The gap between common and legal meaning is significant in conveyancing and property contexts. Ordinary usage treats "mines" as a purely physical description. Legal usage extends the term to abstract property rights — the question of what a grant, exception, or reservation of "mines" legally includes or excludes is an interpretive question with substantial consequences for title, and it is not resolved by reference to the physical meaning alone.
Common Confusion
Mines vs. Minerals: These terms are frequently conflated but are not coextensive. "Minerals" refers to the substances themselves; "mines" historically referred to the places of extraction and the rights incidental to working them. A grant of "mines" may not pass all mineral rights, and a grant of "minerals" may not include the right to enter and work a mine. Courts have treated the terms as overlapping but distinct, and instruments using one without the other require careful interpretation.
Mines vs. Quarries: Common law and many statutes distinguish mines (typically underground or subsurface workings, often for metallic ores or coal) from quarries (typically surface or near-surface workings for stone, gravel, or similar materials). The distinction affects which body of law governs, what royalties are due, and what rights pass under instruments using one term rather than the other.
Recognized Forms
/SUBTYPES
Metal mines: Workings for metallic ores — gold, silver, copper, iron, and similar substances. Subject to distinct federal and state law in the United States, including the General Mining Law of 1872 for federal lands.
Coal mines: Subject to specialized safety and regulatory regimes, including in the United States the Federal Mine Safety and Health Act. Coal rights are frequently severed from surface ownership and governed by their own conveyancing traditions.
Oil and gas wells: Sometimes loosely grouped with mines in older legal usage and older statutes, but generally treated as a distinct category today with its own extensive body of law.
Open-pit or surface mines: Distinct from underground mines in many regulatory and property contexts; surface mining raises acute questions about the rights and protections of surface owners.
Why It Matters in Research
The primary research trap in this area is the instability of what "mines" includes across time and jurisdiction. Older instruments — deeds, wills, leases — using the word "mines" without elaboration have been interpreted to include or exclude surface rights, water rights, appurtenant structures, and discovered-but-unworked deposits, with results that vary sharply by jurisdiction and era. A researcher tracing title or interpreting a historical instrument must not assume that "mines" had a fixed meaning.
The Rapalje & Lawrence entry provided for this term is filed under MILLS rather than MINES, which itself illustrates a research hazard: cross-references and filing choices in older dictionaries are not always predictable, and a term may appear under an adjacent or related headword rather than its own.
Corpus connections to watch: Instruments reserving mines to a grantor, instruments conveying "land with mines appurtenant," and leases of mine workings all generate distinct interpretive problems. Researchers working with 19th-century American conveyances should pay particular attention to whether surface access rights were expressly addressed, since the doctrine of surface support and the rights of miners to access severed mineral estates were not uniformly settled.
Federal public land law adds a further layer: the distinction between "locatable" minerals (governed by the 1872 Mining Law), "leasable" minerals (governed by the Mineral Leasing Act of 1920 and successors), and "saleable" minerals is fundamental to research involving federal lands, and older statutes and cases may not track these modern categories.
Historical Dictionary Support
Rapalje & Lawrence does not provide a usable direct entry for MINES. The adjacent entry (MILLS) touches on analogous property law questions — what passes by a grant of a mill, the role of appurtenances in a conveyance, and treatment of mills in mortgage instruments — that illuminate the interpretive framework courts applied to similar terms. The parallel is instructive: just as courts in the 19th century asked what passed by a grant of "mills with appurtenances," they asked the same question about grants of "mines." The dictionary's approach to MILLS signals that the same sources and reasoning were brought to bear on MINES, even though a discrete entry is absent.
The gap in coverage is itself significant. The absence of a dedicated entry for MINES in a major 19th-century American law dictionary does not mean the subject was unimportant — it more likely reflects organizational choices and the expectation that mine-related questions would be addressed under MINERALS, MINERAL RIGHTS, or ROYALTY. Researchers should check those headwords in any historical dictionary before concluding that a source is silent on the subject.
Jurisdictional Note
American mining law diverges sharply between the eastern and western United States, with western states governed substantially by federal law and a prior appropriation tradition, while eastern states developed their own common law and statutory regimes for coal and other minerals. English common law distinctions — particularly the royal prerogative over gold and silver mines — were largely rejected in the United States but remain relevant to interpreting historical instruments that incorporated English law concepts.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia — Mineral Rights; Extractive Industries and Property Law; Federal Public Land Law