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"Muller gives a quaint description not very unlike that used by Hall and Forbes, only the mouth of the dredge was square, a form which, unless used with great caution, gives fatal facilities for "washing out" in the process of hauling in." — Encyclopedia Britannica, 1893

Fredrick Muller's Dredge

"Muller gives a quaint description not very unlike that used by Hall and Forbes, only the mouth of the…