| http://www.w3.org/ns/prov#value | - Thence, such fluids flow through the hollow bore of shoe 52A and bore 66A in the valve body 64A, such that they bear upon and open or maintain open the valve cover plate 70A, and thus continue flowing down the remainder of the drill string 20A to locations such as the drill or mud motor and mud passages in the drill bit (not shown) and thence up the annulus between the drill string 20A and the bor
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