Definition
Streaming for tin is the historical practice of extracting tin ore from alluvial deposits by directing water through loose surface material — gravel, sand, and sediment — to wash away lighter particles and concentrate the heavier tin-bearing minerals. The practice was localized to Cornwall and Devon in England, where tin mining formed a foundational industry under the jurisdiction of the ancient Stannary courts and laws.
The method differs from hard-rock tin mining in that it works existing watercourses and surface deposits rather than driving shafts or adits into bedrock. Streamers diverted or manipulated natural watercourses to separate ore, which made the practice inherently dependent on — and potentially destructive to — shared water supplies.
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Common Language
Modern common usage (Wiktionary): "Streaming" in contemporary usage refers primarily to the continuous transmission of audio or video data over a network. No common usage of "streaming for tin" exists in modern English outside historical mining contexts.
Historical common usage (Webster's 1913): Webster's 1913 records "stream" as a verb meaning to issue or flow in a continuous current, and notes industrial senses relating to the washing of ores by water.
The gap here is total rather than partial. A modern researcher encountering "streaming" in a legal context will default to digital or data meanings that bear no relationship to this term. The historical industrial sense — water as a processing mechanism for mineral separation — has fallen entirely out of ordinary usage and requires deliberate contextual reorientation.
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Core Elements
The legal dimension of streaming for tin rested on two intersecting frameworks:
1. THE RIGHT TO STREAM: Recognized under Stannary law as a customary right attached to tinners working within the Stannaries. The right permitted diversion and use of watercourses for ore-washing purposes.
2. THE DUTY NOT TO INTERFERE: The right to stream was bounded by the rights of adjoining landowners and other water users. Interference could take three forms identified in the historical sources: (a) withdrawal — reducing the water available to others; (b) pollution — introducing contaminants into shared watercourses; (c) choking — depositing sediment or waste that blocked or impeded others' water flows.
3. STATUTORY PENALTY: Two Tudor statutes — 23 Hen. VIII, c. 8, and 27 Hen. VIII, c. 23 — imposed a penalty of £20 for violations of the duty not to interfere.
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Why It Matters in Research
Researchers will encounter streaming for tin almost exclusively in three contexts: Stannary law materials, English property and water rights history, and early treatises on mining law.
The term is jurisdiction-specific to extreme precision: it applies to Cornwall and Devon and has no counterpart in other legal systems. American mining law, which developed separately through federal land statutes and the customs of the western mining camps, has no analogous doctrine. Researchers working on comparative mining law should not assume any transatlantic continuity on this point.
The statutory references in the historical sources — 23 Hen. VIII, c. 8, and 27 Hen. VIII, c. 23 — are Tudor-era English statutes and should be sought in Statutes of the Realm or equivalent collections of early English legislation. Note that Black's Law Dictionary (2nd Ed., Supplemental) renders the first citation as "23 Hem. VIII" — a clear typographical error for "23 Hen. VIII." Do not rely on this rendering when tracing the primary source.
The water-interference framework embedded in streaming law anticipates doctrines that appear later in riparian rights jurisprudence. Researchers working on the development of English water law may find streaming cases and stannary regulations useful as early precedents for harm-based limitations on water use rights.
The Stannary courts, which held jurisdiction over matters involving tinners, operated largely outside the common law court system until their gradual absorption into ordinary jurisdiction in the nineteenth century. Legal research into streaming disputes may therefore require consulting Stannary court records rather than common law reporters.
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Historical Dictionary Support
Black's Law Dictionary (1st Ed.), Rapalje & Lawrence, and Black's Law Dictionary (2nd Ed., Supplemental) are in near-identical agreement on this term. All three carry the same core definition and the same statutory citations, with only minor typographical variation. This uniformity suggests a common underlying source, likely Brown's Law Dictionary or a shared treatise on Stannary law; Rapalje & Lawrence cites Brown explicitly.
What all three sources omit is context for the Stannary system itself. A reader unfamiliar with the Stannaries would not know from these entries that streaming for tin operated within a specialized customary legal order, that the Stannary courts exercised a distinct jurisdiction, or that tinners held a privileged legal status under the Crown separate from ordinary subjects. The dictionary entries present the term as though it were a standard common law property doctrine, which understates the institutional complexity behind it.
None of the three sources address the question of what happened when streaming rights conflicted with Stannary rights held by other tinners, as opposed to the rights of non-tinner private landowners — a gap that reflects the limited scope of dictionary treatment generally.
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Jurisdictional Note
This term is specific to Cornwall and Devon, England, under historic Stannary law. It has no recognized application in any other jurisdiction. Researchers working in American, Commonwealth, or civilian mining law contexts will not encounter streaming for tin as an operative legal concept.
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