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Overall pig production costs in hoops have been reduced by approximately $ 4 per hog , according to the nonprofit information clearinghouse , Appropriate Technology Transfer for Rural Areas ( ATTRA ) . The extent to which the applicant will distribute the materials , products , documents , and developed or compiled references through community organizations , websites , affiliated list-serves , and subject matter clearinghouses , as well as hard-copy availability . Using the new mitigation clearinghouse , people or organizations can list property they want to make available for mitigation or preservation . The Bridge , a unique on-line marine science clearinghouse , speeds visiting teachers to the best marine education resources available on-line . " The non-profit online clearinghouse , based at Stanford University , will provide a free set of tools to enable creators to share aspects of their copyrighted works with the public .