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Many ways have been devised to detect for these deep finds
. Near the sea wall, both sides of the groyne's, and around the bottom of the pier support pillars, ether sieve the sand as you dig, or throw it well away from the digging
area, and then run your detector over it later. On an open beach, dig a wide trench, detect the sand you dug out, and along the bottom of the trench you have just dug. Then, dig another
trench by the side of the first trench, filling the first trench as you dig. Detect the sand you put in the first trench, and the bottom of the new trench, and then keep repeating the
operation. The best areas to dig trenches are where the black sand is already visible, or is known to exist. The trench method has been used to good effect on the Thames foreshore.
Each of the methods is hard work, but they will all produce results. |