Photo, video or audio is saved as a Blob in IndexedDB, stamped with GPS + bearing, and survives reloads. It appears as a thumbnail beside the station — hover to enlarge, tap for full size. Compass reading needs device sensors over HTTPS (grant permission when prompted); otherwise enter the azimuth manually.

Depths are stored as a magnitude + datum (bgs/elevation) + unit, and mineral figures use the evidence-engine field names, so they stay correct on export. Exceedance is recomputed from the stored concentration vs screening level. Everything survives reloads.

Live sensor: tap ▶, then tilt the phone onto the rock face — strike/dip update in real time. When the phone is seated flat on the plane, tap ⦿ Record to freeze that reading, then Save. Manual entry stays authoritative; sensors need calibration and magnetic→true uses the declination above (NM/AZ ≈ +9° E).

Draws the line, records its type/length, and (optionally) drops numbered station points at your spacing — collapsed under the line so they don't clutter the map (tap the line to see them). Attach the spread's raw or processed file for handoff; FieldGeo carries and locates it — interpretation stays in your geophysics software. Processed results come back as a map overlay (GeoTIFF/KML), added separately.

A screenshot has no coordinates baked in, so tell it where to go — let the AI find it, paste the source map's link/bbox, or set the corners by hand.

After placing, use the overlay's opacity slider in the Image overlays panel to blend it with the basemap. You can re-place it later if the fit is off. GeoTIFF and KML/KMZ skip this step — they carry their own location.

Caches the area on-device for offline use (up to 1,000 tiles per area). The service worker stores USGS / Macrostrat tiles only (public-domain / CC BY); Esri imagery is display-only and never cached. Saved areas are listed below.

Containment is computed in canonical lon/lat: bounding box for rectangle, great-circle radius for circle, ray-casting for polygon. The query shape is removed automatically when you're done.

The selected set is handed to Export (KMZ / ZIP / CSV) without re-querying. Draw a new area anytime to refine.

KMZ embeds downscaled photos + full attributes and opens in Google Earth. The raw archive packs each feature's attributes plus original photos, video, audio & documents, a combined GeoJSON, a flat CSV, and an engine-ready JSON for the evidence stack.

Pushes your sample points (production values, map features & work evidence) straight to the Mining Intelligence engine — no download needed. Nothing is sent for non-sample features.

The project bundle packs everything into one file — stations, measurements, drawings, photos, and your offline areas. Hand it to a crew member and use Import on their device to load the whole survey. This is your backup + crew handoff until cloud sync is added.

iPhone / iPad: tapping a button above opens a Share Sheet. Choose Save to Files to keep the file. If it opens in the browser instead, tap the Share ↑ button then Save to Files.

Styles are preserved in properties.style; structural readings carry strike/dip/type. Export works offline.