Heritage at risk

Part of the china clay works known as Wheal Martyn

Field	Value	Fact links
CURIE	heritage-at-risk:1003265	no fact link
Prefix	heritage-at-risk	Facts
Reference	1003265	Facts
Name	Part of the china clay works known as Wheal Martyn	Facts
Quality	Authoritative: We have some data from the authoritative source	no fact link
Dataset	Heritage at risk	no fact link
Organisation	Historic England	no fact link
Start date		Facts
End date		Facts
Entry date	2024-10-17	Facts
Typology	geography	no fact link
Geometry	MULTIPOLYGON (((-4.808884 50.365835, -4.80905 50.365636, -4.809354 50.365296, -4.809452 50.365242, -4.809861 50.365186, -4.809826 50.365064, -4.809472 50.365001, -4.80913 50.364967, -4.809139 50.364787, -4.809118 50.364603, -4.808797 50.364631, -4.808202 50.364747, -4.808172 50.364699, -4.80792 50.364765, -4.807855 50.364815, -4.807803 50.364877, -4.807825 50.364882, -4.807838 50.36487, -4.807897 50.364908, -4.807863 50.364924, -4.80785 50.36494, -4.807773 50.364927, -4.807766 50.36491, -4.807752 50.364907, -4.807506 50.364889, -4.807467 50.364895, -4.807332 50.364891, -4.80732 50.364932, -4.807633 50.365015, -4.807714 50.365055, -4.80805 50.364867, -4.808186 50.365082, -4.808228 50.365071, -4.808357 50.365272, -4.80819 50.365319, -4.808196 50.365328, -4.808169 50.365336, -4.808266 50.365462, -4.80824 50.36547, -4.808475 50.365777, -4.808509 50.365832, -4.808767 50.365828, -4.808884 50.365835)), ((-4.806781 50.364651, -4.807011 50.364499, -4.806499 50.364066, -4.806309 50.364125, -4.806133 50.3642, -4.805975 50.36429, -4.805822 50.364406, -4.805941 50.364489, -4.806264 50.364297, -4.806781 50.364651))) MULTIPOLYGON (((-4.808884 50.365835, -4.80905 50.365636, -4.809354 50.365296, -4.809452 50.365242, -4.809861 50.365186, -4.809826 50.365064, -4.809472 50.365001, -4.80913 50.364967, -4.809139 50.364787, -4.809118 50.364603, -4.808797 50.364631, -4.808202 50.364747, -4.808172 50.364699, -4.80792 50.364765, -4.807855 50.364815, -4.807803 50.364877, -4.807825 50.364882, -4.807838 50.36487, -4.807897 50.364908, -4.807863 50.364924, -4.80785 50.36494, -4.807773 50.364927, -4.807766 50.36491, -4.807752 50.364907, -4.807506 50.364889, -4.807467 50.364895, -4.807332 50.364891, -4.80732 50.364932, -4.807633 50.365015, -4.807714 50.365055, -4.80805 50.364867, -4.808186 50.365082, -4.808228 50.365071, -4.808357 50.365272, -4.80819 50.365319, -4.808196 50.365328, -4.808169 50.365336, -4.808266 50.365462, -4.80824 50.36547, -4.808475 50.365777, -4.808509 50.365832, -4.808767 50.365828, -4.808884 50.365835)), ((-4.806781 50.364651, -4.807011 50.364499, -4.806499 50.364066, -4.806309 50.364125, -4.806133 50.3642, -4.805975 50.36429, -4.805822 50.364406, -4.805941 50.364489, -4.806264 50.364297, -4.806781 50.364651)))	Facts
Point	`POINT (-4.808331 50.36502)`	Facts
Documentation url	https://historicengland.org.uk/advice/heritage-at-risk/search-register/list-entry/2289445	Facts

{
        "entry-date": "2024-10-17",
        "start-date": "",
        "end-date": "",
        "entity": 7501547,
        "name": "Part of the china clay works known as Wheal Martyn",
        "dataset": "heritage-at-risk",
        "typology": "geography",
        "reference": "1003265",
        "prefix": "heritage-at-risk",
        "organisation-entity": "16",
        "geometry": "MULTIPOLYGON (((-4.808884 50.365835, -4.80905 50.365636, -4.809354 50.365296, -4.809452 50.365242, -4.809861 50.365186, -4.809826 50.365064, -4.809472 50.365001, -4.80913 50.364967, -4.809139 50.364787, -4.809118 50.364603, -4.808797 50.364631, -4.808202 50.364747, -4.808172 50.364699, -4.80792 50.364765, -4.807855 50.364815, -4.807803 50.364877, -4.807825 50.364882, -4.807838 50.36487, -4.807897 50.364908, -4.807863 50.364924, -4.80785 50.36494, -4.807773 50.364927, -4.807766 50.36491, -4.807752 50.364907, -4.807506 50.364889, -4.807467 50.364895, -4.807332 50.364891, -4.80732 50.364932, -4.807633 50.365015, -4.807714 50.365055, -4.80805 50.364867, -4.808186 50.365082, -4.808228 50.365071, -4.808357 50.365272, -4.80819 50.365319, -4.808196 50.365328, -4.808169 50.365336, -4.808266 50.365462, -4.80824 50.36547, -4.808475 50.365777, -4.808509 50.365832, -4.808767 50.365828, -4.808884 50.365835)), ((-4.806781 50.364651, -4.807011 50.364499, -4.806499 50.364066, -4.806309 50.364125, -4.806133 50.3642, -4.805975 50.36429, -4.805822 50.364406, -4.805941 50.364489, -4.806264 50.364297, -4.806781 50.364651)))",
        "point": "POINT (-4.808331 50.36502)",
        "quality": "authoritative",
        "documentation-url": "https://historicengland.org.uk/advice/heritage-at-risk/search-register/list-entry/2289445",
        "organisation-curie": "government-organisation:PB1164"
    }

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© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on [date]. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

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