Joseph J. Demeter / Francis E. Brantley / Henry G. Iverson / John B. Shutack / Kenneth H. Johnston / Lanford H. Adami / Martin H. Stanczyk / Richard E. Thill / Robert A. Bradburn / Walter L. Acherman / C. J. Joe / Daniel Bienstock / E. K. Landis / Harold Leitch / Ignatz L. Feld / John P. Carter / John R. McWilliams / Merle L. Bowser / Norman E. Hanna / David Schlain / Thomas Robert Bur / W. R. Cureton

OSU:32435051866598

Aluminum oxide

Louis B. Pankratz / D. A. Martin / Frank A. Peters / Howard E. Powell / Miles E. Tyrrell / Raynard V. Lundquist / Ronald Barany / Thomas L. McVay / W. Floyd Holbrook / William W. Weller / Edward Gerard King / Clarence Warren Houck / Harold Leitch / James S. Browning / Kenneth Keith Kelley / Leland A. Yerkes / Paul Watson Johnson / Willis A. Calhoun / Ralph C. Kirby

OSU:32435051867349

Aluminum ores

Raynard V. Lundquist / Harold Leitch

UOM:39015078519405

Aluminum

Raynard V. Lundquist / Harold Leitch

UOM:39015077556275

Aluminum oxide

Henry G. Iverson / Harold Leitch

UOM:39015078537480

Aluminum oxide

Raynard V. Lundquist / Harold Leitch

UOM:39015077556952

Calcium aluminate

Harold Leitch / Henry G. Iverson / Julius Bruce Clemmer

UOM:39015078525287

Aluminum oxide

H. Leitch / Henry G. Iverson / J. B. Ciemmer

OCLC:254207926

Harold Leitch

OCLC:27771913

N. F. Le Jeune / Lee Clyde Ilsley / W. W. Adams / Arno Carl Fieldner / Carl A. Taylor / Earl Carlton Lane / F. W. Davis / G. H. West / George Edward McElroy / George William Jones / Harold Coulter George / J. E. Crenshaw / Jay John Jakosky / John H. Thompson / Ludwig Schmidt / Lynton Dewitt Wyant / Mayo Dyer Hersey / Oliver Bowles / Ozni Porter Hood / Percy Hoke Royster / Ralph Lyman Brown / Ray Thomas Stull / Richard Valentine Ageton / Rudolf H. Kudlich / Sidney Hershberg Katz / Allan Shakespeare Richardson / E. F. Pohlman / E. W. Butzler / Erskine Shearer Longfellow / George Addison Bole / H. M. Smith / Howard Bassett Freeman / John Jacob Bloomfield / R. L. Sebastian / Richard Duddleston Leitch / Thomas Leonard Joseph / William Henry Rinkenbach / William Parks Yant / H. G. Berger / Lawrence Bursley Berger / Selwyne Perez Kinney / W. A. Darrow

OSU:32435067622563

Aggregates (Building materials)

Henry G. Iverson / Harold Leitch

OCLC:1139399106

Aluminum oxide

David D. Walker / John J. Mulligan / Leonard Obert / Raynard V. Lundquist / Thomas C. Atchison / Harold Leitch / Wilbur I. Duvall / Joseph M. Pugliese

OCLC:10332784

Blasting

A. W. Henderson / Elbridge W. Gresseth / Everett A. Sondreal / Floyd William Wood / Francis E. Brantley / Frank G. Horino / H. Austin Tucker / Henry G. Iverson / J. Oscar Winget / John B. Shutack / John E. Zeilinger / John Hudy / John R. Hoskins / John Ward Smith / Joseph J. Demeter / Kenneth H. Johnston / Lanford H. Adami / Martin H. Stanczyk / Ralph B. Adair / Richard E. Thill / Robert A. Bradburn / Walter L. Acherman / William S. Sanner / A. W. Deurbrouck / C. J. Joe / Daniel Bienstock / David H. Yee / E. K. Landis / Harold Leitch / Ignatz L. Feld / James S. Browning / John P. Carter / John R. McWilliams / Laurence G. Trudell / Merle L. Bowser / Norman E. Hanna / R. T. Coulehan / Roald Edmund Lindstrom / Rolland R. Reid / Wayne R. Kube / David Schlain / Frank E. Block / James L. Elder / Kenneth Edison Stanfield / Thomas Robert Bur / W. R. Cureton / William Gilbert Wilson

OCLC:12637539

Aluminum oxide

Howard O. Poppleton / John A. Ruppert / Raynard V. Lundquist / F. E. Block / Harold Leitch / P. M. Sullivan

OCLC:32813383

Aluminum

Thomas M. Masiatka / Frank Badda

OCLC:1123772741

Bernard Porter / T. A. Henrie / R. E. Meaker

OCLC:254206014

OAC Review Index

OCLC:1315063987

OAC Review Index / Roy Allan / F. Howard MacLennan / Mary M. Armour / Manning W. Doherty / Aaron Sapiro / J.W. Freeborn / M.H. Porter / R.W. Bogue / George Bogue / Ernest Robson / Robert McEwen / Andrew Hicks / H.P. Steckle / H.L. Trueman / D.C. McArthur / G.A. Green / Ernest Weld / D.E. Carroll / R.J. Bryden / Walter James Brown / S.D. Irvine / H.F. Hudson / R.A. Finn / Justus Miller / E.H. Shuttleworth / P.F. Love / I.B. Whale / J.T. Johnston / B.E. Foyston / George S. Elliot / W.H.J. Tisdale / A. Leitch / C. Harold Zavitz / J. Ian Way / MacWaddell / J.W. Lawrence / J.C. Neale / P.D. Vahey / W.P. MacDonald / R.S. Duncan / W.R. Reek / J.B. Sackville / M.H. Staples / J.B. Fairbairn / C.C. Luton / C.W. Buchanan / F.H. Silcox / G. Kingsmill / D.A. Andrew / C. Lamont / Wishart / George C. Creelman / Nelson Monteith / A. McKeary / R.W. Morison / G.W. Short / B.A. Ward / M.L. Hancock / A.E. Silverwood / A.G. Farrow

OCLC:625395282

OAC Review Index

OCLC:625395282

OCLC:857877114

OAC Review Index (University of Guelph) / J. F. Howitt / G. A. Bradley / J. M. Fargey / A. F. Dawson / F. J. Bell / G. J. Van Dorsser / I. R. Sparling / K. W. Hammond / D. A. Betts / J. B. Gartshore / R. L. Bain / C. U. Ashton / R. W. Hutton / F. B. H. Sheffield / I. Rickley / A. W. McArton / F. R. Fraser / M. R. Fraser / A. D. Thomas / D. A. Scott / J. E. Doan / F. J. Davis / J. S. Beilby / A. B. Aylsworth / H. Klinck / S. J. Slinger / C. G. Plested / J. M. Bromley / F. H. Gorsline / H. B. Young / G. A. Hart / E. D. Wolfe / R. W. Stuart / L. N. Pearche / H. A. Luscombe / E. F. C. Dayman / Catherine Galbraith / C. A. Chidley / R. Smees / C. M. Ball / W. T. R. Hobden / N. J. Denholm / R. Clapperton / C. L. Thomson / O. O. Paddon / H. Cross / R. Le Grow / N. J. Scott / J. H. H. Phillips / A. G. Smith / G. D. Wallace / R. W. R. Robertson / G. Rickwood / A. L. Thompson / K. E. Stringer / F. M. Skelton / P. J. Kinnear / D. C. Hill / E. E. Huff / S. R. Berry / F. B. Strong / J. C. Spry / J. E. Van Loon / R. H. McNeil / W. A. MacDougall / E. G. M. Overend

OCLC:628872843

OAC Review Index / W.A. Young / D.A. Andrew / W.E. Hamilton / J.C. Neale / G.B. Hood / D.C. McArthur / Harold Fry / James Creelman / J.B. Fairbairn / G.A. Robertson / W.R. Reek / W.H. Wright / P.M. Overholt / Charles Palmer / J.Y. Kellough / A.H. Martin / C.M. Meek / Ralph Clemens / Charles Buchannan / J.A. Carroll / R.S. Duncan / D.F. Adams / Archie Porter / H.A. Smallfield / R.E. Balsh / G.H. Unwin / W.G. Evans / Dick Sands / Stone / A.W. Baker / L. Caesar / R.R. Graham / W.C. Blackwood / J.R. Kirk / G.L. Jarvis / F. Eric Millen / Joseph Coke / G.H. Edwards / R.D. Colquette / H. Leitch / E.H. Marston / J.B. Smith / F.N. Marcellus / W.R. Graham / George E. Raithby / R.G. Knox / J.C. Steckley / Wade Toole / Oswald McConkey / A.W. Mason / Charles Ambrose Zavitz / J.B. Reynolds / George C. Creelman / R.W. Wade / George E. Day / J. Walter Jones / James Short / E.A. Howes / I. Christie / H.B. Disbrowe

OCLC:628328949

OAC Review Index (University of Guelph) / I. R. Sparling / F. J. Bell / L. N. Pearce / F. V. Macdonald / J. B. Gartshore / H. C. Arrell / G. A. Hart / K. W. Hammond / R. W. Hutton / R. Clapperton / I. Rickley / C. L. Thomson / W. T. R. Hobden / F. H. Gorsline / F. J. Davis / D. A. Scott / A. W. McArton / J. F. Howitt / C. G. Plested / J. M. Bromley / Catharine Galbraith / H. Cross / H. Klinck / C. M. Ball / J. M. Fargey / S. J. Slinger / O. O. Paddon / H. B. Young / A. B. Aylsworth / D. A. Betts / D. C. Hill / A. G. Smith / J. H. H. Phillips / N. J. Denholm / E. F. C. Dayman / H. A. Luscombe / E. D. Wolfe / S. R. Berry / R. Le Grow / G. D. Wallace / F. B. Strong / R. Smees / G. Rickwood / F. R. Fraser / R. W. R. Robertson / F. M. Skelton / P. G. Kinnear / K. E. Stringer / J. E. Van Loon / A. L. Thompson / E. E. Huff / J. C. Spy / W. A. MacDougall / E. G. M. Overend / R. H. McNeill

OCLC:628894386

OAC Review Index / Laura Pepper / Helen Margaret Gilbertson / Gladys Eaton / Jo Ashton / Marion Laing / Margaret McLaughlin / Ruth McCabe / George Williams McWilliam / Helen Nicholas Leitch / Cameron McCall / James Harold Smyth / Helen Gertrude Snyder / Harriet Taylor / Nancy Taylor / Betty Christie / McQueen / Bovair / K.T. Fuller / Church / Isaacs / Jesse Wilson / Griffin / Dixon Smith / Waters / Vera Fierheller / Muriel Hutchings / Inga Hislop

OCLC:627912323

OAC Review Index / George Pearson / Nourse / J.H. McCulloch / Fred Richardson / William Hamilton / Harold Whiteside / Lloyd Baker / H.G. Masters / W.D. Wood / J.E.D. Whitmore / D.C. McArthur / A. Leitch / J.B. Hoodless / A.E. Davey / Louis M. Schenk / Ann Flynn

OCLC:625389498

United States. Bureau of Mines

OCLC:1139494597

Acid mine drainage

United States. Bureau of Mines

OCLC:1139478238

Abandoned coal mines

United States. Bureau of Mines

OCLC:1139511379

Anthracite coal

United States. Bureau of Mines

OCLC:1139485362

Acid mine drainage

Harry Earle Tufft

OCLC:1139496268

Anthracite coal industry