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Jan 1, 1946

Jan 5, 1953

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Jan 1, 1938

Jan 1, 1893

ALABAMA Alabama City.-Eddy, L. Altoona.-Cain, J. America.-Foreman, J. T. Anniston.-Foster, R. N. Ashland.-Sturdevant, J. C. Bessemer.-Ball, E. M. Calhoun, F. W. Maschmeyer, W. L. McKenzle, W. C., Jr. Birmingham.-Abbott, C. E. Aldrich, T. H. Aldrich, T. H, Jr. Ashton, J J.

Jan 1, 1923

By John Van N. Dorr

Introduction.................... 212 The DoRR Classifier.........212 History................ 212 Description................... 215 Regulation of Products............. 216 Cost of Operation.............216 Power...........216 Capacity..............216 Uses.................217 The Dorr Thickener.............219 History...........292 Description.............. 221 Speed............ 222 Power......,....223 Repairs.............,... 223 Labor................. 224 Capacity................ 224 Density of Underflow............... 224 Uses.........,.......226 Continuous Counter-Current Decantation....... 227 Concentration..............227 Industrial Uses................228 Acid-Proof Thickeners.......... 228 The Dorr Tray Thickener........... 229 Description.................. 229 Capacity................. 231 The Dorr Agitator................. 232 History................... 232 Description................... 233 Speed.................... 234 Power.................... 234 Renewals................... 235 Efficiency................... 236 Selective Agitation................ 236 Conclusion................... 237

Jan 1, 1915

Jan 1, 1880

Jan 1, 1932

Jan 1, 1952

Jan 1, 1956

Jan 1, 1918

Jan 1, 1904

ALABAMA Altoona -Cain, J Anniston -Cowie, L K Heimrod, A A White, H E Bessemer-Abbott, C C Ball, E M Mitchell, F R Thompson, N E Birmingham -Adler, T E Aldrich T H Aldrich, T H, Jr Blackburn, A R Bush, 117 W Clark, G H Cowin, P G Crane, W R Crawford, G G Crockard, F H Darnelspn, G E Davis, C B

Jan 1, 1923

NORTH AMERICA ALASKA Anchorage.-Strandberg, H. College.-Barber, R. J. Burns, W. T. Henricksen, R. Henton, H. M. Joesting. H. R. Comet.-Albertson, F. E. Douglas.-Cahill, W. E. Carlson, L. Fairbanks.-Andregg. J. N. Coats. R. R.

Jan 1, 1938

Jan 1, 1958

COUNCIL OF SECTION DELEGATES Jack A. Criehton. Chairman Allen T. Cole. Vice Chairman M I. Signer, Secretary EXECUTIVE COMMITTEE W. C. Leonard, North Pacific W. K. Beck, Cleveland W. W. Leonard, Southwest Texas

Jan 1, 1952

Jan 5, 1951

Jan 1, 1925

Jan 1, 1961