Reply-To: | | [log in to unmask][log in to unmask], 21 Jan 2004 11:12:29 -0000599_- The geological formation of the Durham area is such that the coal measures outcrop on the western slopes of the Pennies and gradually fall to the East where they extend under the North Sea. When mining first began in County Durham, it did so in the west where the coal measures were closest to the surface and as the coalfield developed it moved East following the dip of the coal measures. Consequently the abandoned collieries to the west acted as conduits for groundwater and have been the origin of severe flooding problems in the past. To enable work to continue [...]45_21Jan200411:12:[log in to unmask] |