[
  {
    "id": "ulg-map",
    "projectId": "erongo",
    "name": "ULG · samples, trenches & collar symbols",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9769143"
    ],
    "locator": "ULG surface-geochemistry map (second figure)",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "Native reconstruction in source pixels. Grade marks preserve source colour classes; numeric bin edges are not confidently legible; rendered marks are not a sample census. No drill trajectories or subsurface grades. Internal grid spacing ≈3.97 m/pixel; geographic CRS remains unverified."
  },
  {
    "id": "east-hlem",
    "projectId": "erongo",
    "name": "Paleo East · HLEM profiles",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9581203"
    ],
    "locator": "Figure headed EPL 8995 East HLEM Lines",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "Digitised HLEM line paths are plan-view source features, not underground channel models. Conductivity and depth interpretation do not establish uranium grades."
  },
  {
    "id": "west-hlem",
    "projectId": "erongo",
    "name": "ULG / Paleo West · HLEM profile",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9581203"
    ],
    "locator": "Figure headed EPL 8995 Central Target",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "Published central HLEM line and ULG outline in their own source frame; May interpretation cannot be registered to September collars from visual similarity."
  },
  {
    "id": "8290-regional",
    "projectId": "erongo",
    "name": "EPL 8290 · regional geophysical context",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9581203"
    ],
    "locator": "Figure headed Exclusive Prospecting Licences Primary Target Areas",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "Native licence outline digitised for dated context only. Response raster is retained in Original/Compare; numerical geophysics cannot be recovered from its colour image."
  },
  {
    "id": "8298-points",
    "projectId": "erongo",
    "name": "EPL 8298 · environmental target waypoints",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "eis-8298-0"
    ],
    "locator": "PDF p 8 Table 2",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "Reported latitude/longitude preserved. Relative metric layout about centroid only; datum unspecified. These are target waypoints, not assays or collars."
  },
  {
    "id": "7986-points",
    "projectId": "erongo",
    "name": "EPL 7986 · environmental target waypoints",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "eis-7986-68"
    ],
    "locator": "PDF p 8 Table 2",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "Reported latitude/longitude preserved. Relative metric layout about centroid only; datum unspecified. These are target waypoints, not assays or collars."
  },
  {
    "id": "campaign",
    "projectId": "erongo",
    "name": "EPL 8995 • ULG / Paleo East / Paleo West",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9769143"
    ],
    "locator": "Programme location figure (first figure)",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "Published plan in source-pixel coordinates. Selection markers identify approximate target areas, not surveyed collars or legal boundaries."
  },
  {
    "id": "licence-context",
    "projectId": "erongo",
    "name": "Four licences • issuer regional context",
    "available": true,
    "evidenceCategory": "reference",
    "sourceIds": [
      "presentation"
    ],
    "locator": "PDF p 18",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Source-local; no geographic CRS registration",
    "transform": "Source pixel or relative local coordinates; see native-scenes.json",
    "registration": {
      "status": "source_local"
    },
    "geographic": false,
    "limitations": "April 2026 issuer regional map, source-local only. Nearby deposits are contextual and do not demonstrate an Arkle resource."
  },
  {
    "id": "terrain-context",
    "projectId": "erongo",
    "name": "Erongo · terrain & satellite context",
    "available": true,
    "evidenceCategory": "reference",
    "sourceIds": [
      "copernicus-context"
    ],
    "locator": "Provider georeferencing; see context manifest",
    "assets": [
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "EPSG:32733 / EGM2008, provider context only",
    "transform": "Provider reprojection to commonUTMgrid",
    "registration": {
      "status": "validated_geographic",
      "scope": "Provider-georeferenced context only, NOT exploration overlays",
      "independentChecks": [
        "Copernicus source CRS EPSG4326 independently declared; Sentinel native tile CRS EPSG32733 independently declared. Both sampled onto the same explicit EPSG32733 bounds.",
        "WGS84 centre on independently published December2023 EIS map falls inside context footprint. This checks regional location, not cadastral or surveyed feature alignment.",
        "Registration arithmetic and raster bounds checked; surveyed ground accuracy not independently verified."
      ]
    },
    "geographic": true,
    "limitations": "True elevation scale ×1. Geographic context only: no unregistered exploration overlays. Copernicus DSM acquisition 2011–2015; Sentinel-2 acquired 30 September 2026. Elevations are EGM 2008, not surveyed collar RL."
  },
  {
    "id": "unavailable-subsurface",
    "projectId": "erongo",
    "name": "Validated geological / resource solids",
    "available": false,
    "evidenceCategory": "interpreted",
    "assumptions": [
      "No defensible public basis for geological continuity or a resource solid"
    ],
    "requirements": [
      "Native geological contacts, full drilling/surveys/assays, interpretation provenance and company technical review; a resource model only if one is independently established"
    ]
  },
  {
    "id": "v3-ulg-map",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9769143"
    ],
    "assets": [
      {
        "path": "derived/ulg-map-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 476,
      "height": 416,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "ULG surface evidence • September 2026. Select collar symbols, partial trenches and assay marks. Original is visible in Compare. Source-local frame: no surveyed trajectories, collar elevations or geographic registration.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-8290-regional",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/8290-regional-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 1733,
      "height": 975,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Selected 2025 surface results and source target outlines. Sample maxima do not establish representative grade. All shapes remain in the presentation image frame; neighbouring properties are context only.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-8298-regional",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/8298-regional-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 1733,
      "height": 975,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Selected 2025 surface results and source target outlines. Sample maxima do not establish representative grade. All shapes remain in the presentation image frame; neighbouring properties are context only.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-7986-geology",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/7986-geology-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 1084,
      "height": 975,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Published EPL7986 outline and Rössing Dome interpretation. Adjacent mine is context; its resource, workings and geology cannot be attributed to Arkle. Source-local map with undated satellite background.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-east-hlem",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9581203"
    ],
    "assets": [
      {
        "path": "derived/east-hlem-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 589,
      "height": 498,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Digitised HLEM line paths are plan-view source features, not underground channel models. Conductivity and depth interpretation do not establish uranium grades.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-west-hlem",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9581203"
    ],
    "assets": [
      {
        "path": "derived/west-hlem-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 591,
      "height": 490,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Published central HLEM line and ULG outline in their own source frame; May interpretation cannot be registered to September collars from visual similarity.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-8290-may",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9581203"
    ],
    "assets": [
      {
        "path": "derived/8290-may-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 604,
      "height": 504,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Native licence outline digitised for dated context only. Response raster is retained in Original/Compare; numerical geophysics cannot be recovered from its colour image.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-8298-points",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "eis-8298-0"
    ],
    "assets": [
      {
        "path": "derived/8298-points-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "approximate local metres",
      "width": 1240.1757805526167,
      "height": 1428.6388399997982,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Reported latitude/longitude preserved. Relative metric layout about centroid only; datum unspecified. These are target waypoints, not assays or collars.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-7986-points",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "eis-7986-68"
    ],
    "assets": [
      {
        "path": "derived/7986-points-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "approximate local metres",
      "width": 886.5118175084992,
      "height": 898.5330000002506,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Reported latitude/longitude preserved. Relative metric layout about centroid only; datum unspecified. These are target waypoints, not assays or collars.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-campaign",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9769143"
    ],
    "assets": [
      {
        "path": "derived/campaign-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 477,
      "height": 418,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "September 2026 programme map. Select recoverable collar-symbol fragments in the eastern and western fences; mapped symbols are not a verified hole census. The inset is excluded from digitisation. Individual depths, directions and assays remain unavailable.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-licence-context",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/licence-context-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 1248,
      "height": 702,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "April 2026 issuer regional map, source-local only. Nearby deposits are contextual and do not demonstrate an Arkle resource.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-legacy-east",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "rns-9635389"
    ],
    "assets": [
      {
        "path": "derived/legacy-east-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 594,
      "height": 449,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "June 2026 gamma survey. Historical collar marks, interpreted channel banks and HLEM traverses. Callout oxide labels omit e; prose identifies gamma-derived equivalent uranium. Geological depth interpretation is not mineralised thickness.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-regional-radiometrics",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/regional-radiometrics-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 1733,
      "height": 975,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Government radiometric backdrop in U counts per second (cps), not uranium assay grade. Native licence and target outlines are selected source features; quantitative grid values cannot be recovered from the colour picture.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-east-samples",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/east-samples-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 652,
      "height": 734,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "2025 selective surface samples, reported in ppm U₃O₈. Native banks and sample classes are source-local. Base imagery acquisition is not disclosed by the presentation.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-east-geology",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/east-geology-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 556,
      "height": 626,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Native flat geological colour fragments from the published map. Gaps preserve labels, contacts and uncertain pixels. Regional formation assignments are source interpretations, not underground surfaces.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "v3-7986-samples",
    "projectId": "erongo",
    "available": true,
    "evidenceCategory": "derived",
    "sourceIds": [
      "presentation"
    ],
    "assets": [
      {
        "path": "derived/7986-samples-native.svg"
      }
    ],
    "frame": {
      "type": "source_local",
      "units": "source pixels",
      "width": 396,
      "height": 464,
      "origin": "image upper left; x right, y down"
    },
    "transform": "x_scene=x_pixel−width/2; z_scene=y_pixel−height/2; flat display plane, no ground elevation",
    "registration": {
      "status": "source_local",
      "independentChecks": []
    },
    "limitations": [
      "Six labelled surface results. The figure prints 2,924 ppm whereas acquisition prose gives 2,923 ppm; both retained as an unresolved source discrepancy, not averaged.",
      "Independent geographic controls not recovered."
    ]
  },
  {
    "id": "ulg-combined",
    "projectId": "erongo",
    "name": "ULG combined evidence",
    "available": true,
    "evidenceCategory": "interpreted",
    "sourceIds": [
      "rns-9769143",
      "geographic-ulg-v4"
    ],
    "assets": [
      {
        "path": "derived/geographic-v4/registration.json"
      },
      {
        "path": "derived/native-scenes.json"
      }
    ],
    "frame": "Assumed EPSG:32733 display frame; issuer datum unconfirmed",
    "registration": {
      "status": "approximate_not_survey_registered",
      "sourceScene": "ulg-map",
      "sourceId": "rns-9769143",
      "candidateCRS": "EPSG:32733 — WGS84 / UTM zone33S, assumed; issuer does not specify datum",
      "sourceFrame": "476×416 source-image pixels, unchanged in original scene",
      "transform": {
        "easting": "493000 + (x - 31) * 500 / 126",
        "northing": "7546000 + (67 - y) * 500 / 126.5",
        "empiricalShiftMetres": [
          0,
          0
        ]
      },
      "controls": {
        "eastings": [
          [
            31,
            493000
          ],
          [
            157,
            493500
          ],
          [
            283,
            494000
          ],
          [
            409,
            494500
          ]
        ],
        "northings": [
          [
            67,
            7546000
          ],
          [
            194,
            7545500
          ],
          [
            320,
            7545000
          ]
        ],
        "kind": "printed grid ticks, internal controls only"
      },
      "residuals": {
        "eastHoldoutMetres": 0,
        "northMiddleTickMetres": 1.9762845849618316,
        "interpretation": "Internal map-grid closure; not independent positional accuracy."
      },
      "geographicCrosschecks": [
        {
          "kind": "regional plausibility",
          "finding": "Grid centre493800E/7545600N transforms to14.939852E,22.194890S, in the disclosed Erongo setting and near the8995 environmental map centre; this is not boundary or title verification."
        },
        {
          "kind": "qualitative independent imagery comparison",
          "finding": "Unshifted 2026-09-30 Sentinel crop displays the same broad northeast-oriented ridge/drainage fabric and southern curved drainage pattern visible in the issuer basemap. No surveyed control or automated match accuracy is claimed.",
          "asset": "derived/geographic-v4/ulg-grid-crosscheck.png"
        }
      ],
      "limitations": [
        "Issuer CRS/datum remains unconfirmed; alternative datum/systematic displacement is unquantified.",
        "Source digitisation uncertainty remains feature-specific; no surveying precision is inferred.",
        "Do not use the historical Bessel/Albers grant frame as if it were the issuer grid.",
        "The overlay is display-only and optional, not a current licence boundary or geological model.",
        "Surface symbols drape on the DSM; height does not represent measured collarRL or trench excavation depth."
      ],
      "independentSurveyControls": 0,
      "cutoff": "2026-09-30"
    },
    "geographic": true,
    "limitations": "Approximate optional overlay. Zero independent survey controls; systematic datum error unquantified. Stroke widths exaggerated for visibility. No underground traces.",
    "transform": {
      "easting": "493000 + (x - 31) * 500 / 126",
      "northing": "7546000 + (67 - y) * 500 / 126.5",
      "empiricalShiftMetres": [
        0,
        0
      ]
    },
    "assumptions": [
      "Issuer CRS/datum remains unconfirmed; alternative datum/systematic displacement is unquantified.",
      "Source digitisation uncertainty remains feature-specific; no surveying precision is inferred.",
      "Do not use the historical Bessel/Albers grant frame as if it were the issuer grid.",
      "The overlay is display-only and optional, not a current licence boundary or geological model.",
      "Surface symbols drape on the DSM; height does not represent measured collarRL or trench excavation depth."
    ]
  }
]