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<br />.'11" <br /> <br />AVAILABLE PUBLICATIONS <br /> <br />The following publications are available from <br />the Colorado State University Bulletin Room: <br /> <br />1. Mixing Bentonite for Sealing Purposes, <br />Circ. 204 A. <br /> <br />2. Testing Bentonite for Sealing Purposes. <br />Circ. 205A. <br /> <br />3. Sealing Farm Ponds with Bentonite, Circ. <br />206A. <br /> <br />The above circulars apply, in general. to <br />Wyoming bentonite, but the procedures for the best <br />Colorado clays will be similar. Circular 202A -- <br />Sealing Sandy Ditches with the Bentonite Dispersion <br />Method, and Circular 203A -- Sealing Rocky Ditches <br />with the Bentonite Multiple-Dam Method, are out of <br />print, although possibly the Wyoming Extension <br /> <br />Service at Laramie, Wyoming. still has a supply <br />(Wyoming Nos. i58 and i59). <br /> <br />A rewrite of the Rocky Ditch circular has <br />been completed, which relates to methods of using <br />Colorado clays. It is expected to be available for <br />distribution from the Colorado State University <br />Bulletin Room by March 1962. <br /> <br />A limited supply of CER60RDD33, Sediment <br />Sealing of Irrigation Canals {Report of the three- <br />year period of 1957 through 1959) is available at a <br />cost of $2. aD/copy. This report is primarily con- <br />cerned with the use of Wyoming high-swell bento- <br />nite, but it also relates the experience with the <br />88-13 sealant in the Coaehella Canal of Southern <br />California. <br /> <br />8 <br />