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Using a total station on the surface to set up a giro on the base line at West Mine. The giro was used underground to set a base line there

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Title: Using a total station on the surface to set up a giro on the base line at West Mine. The giro was used underground to set a base line there

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Sketch made during Tom's Shaft excavationSurveying the minesHigh grade surveying with a theodolite in West Mine
Adding detail such as passage height and width. The tape represents the line surveyed by theodoliteUsing a total station to survey in the main chamber of Alderley Edge. The distant light is a reflector placed over a survey stationUsing a total station on the surface to set up a giro on the base line at West Mine. The giro was used underground to set a base line there
The underground transmitter for radio location. The point is found on the surface when the signal is lost - the null point.Using radiolocation on the surface to locate a signal transmitted from below groundReflector set up on radiolocated station (marked by the stake). The surveyor in the distance is using a total station to locate the station accurately

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