New School, Cornwall

Old Ordnance Survey maps showed the site to have remained undeveloped from first edition maps (1881) until the present day and to have been in use as playing fields associated with an adjacent existing school, which a plaque showed as being built in 1963. Old shafts are shown in the surrounding area.

Based on the published geology, expected ground conditions were topsoil, underlain by calcareous slate, grit and thin beds of limestone. Mineralised veins (lodes) and an elvan dyke cross the site; these may or may not have been worked.

A mining archive report showed the site to be located in an area of historic metalliferous mining activity. Known shafts and workings are present within the immediate vicinity of the site.

A geophysics report identified magnetic anomalies that might be mining-related.

An intrusive site investigation, comprising trial pits and trenches, followed by rotary boreholes, together with in-situ and laboratory testing, was recommended (and later carried out by Ruddlesden geotechnical) to confirm both the geotechnical and environmental recommendations. The trial pit and trial trench locations were to be targeted based on the findings of a mining report, geophysics survey and site observations. The borehole locations would depend on the results of the trial pits and trenches.

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New School, Cornwall image

New School, Cornwall image