- Email: [email protected]
In memoria D. F. Kelsall, Ph.D., FTS
PowdtirTechizology.33
(1982)1-
4
In Memoria
D_ F_ KelsaU, Ph.D., FTS With the death on 15th April, 1982 at the age of 64 of Denis (Kelly) Kelsall, the field of mineral processing research lost one of its most productive and colourful workers. He started his distinguished career when he entered Cambridge University as a Queens College Exhibitioner and Foundation Scholar and ultimately graduated with first class honours in chemistry, physics and mineralogy in the Part I Natural Science Tripos and in Chemistry in Part II. Joining Imperial Chemical Industries Central Research Laboratory at Widnes, U-K., he first worked in the organic chemical field_ The outbreak of hostilities interrupted his scientific career and resulted in him joining the Royal Air Force in 1941 as a pilot in Coastal Command, where he served until 1945. In 1947 he joined the Atomic Energy Research Establishment (AERE) at Harwell where, after spending a short period at Chalk River in Canada on isotope separation, he commenced his long involvement with the minerals industry_ After spending a further two years in Canada studying mineral dressing techniques at the Bureau of Mines he started his classic studies of hydrocyclone operation at the Harwell laboratories of AERE. His first paper on this work earned him the 1952 Moulton Medal of the Institution of Chemical Engineers and this paper, together with a subsequent publication in Chemical Engineering Science, forms the most comprehensive study of the subject available to the present day. In 1953 Dr. Kelsall left Harwell to work for Rhoanglo Mines Services in Rhodesia and during the five years he spent in Africa he gained a deep insight into the problems associated with translating scientific research into industrial practice_ In particular he concentrated in relating the results of laboratory studies of grinding and flotation to performance in full scale plant. He joined the Commonwealth Scientific and Industrial Research Organization in Australia in 1958 and remained there until his death. His first major achievement after joining CSIRO was the development of the Cyclosizer for the determination and isolation of sub-sieve size fractions. This having been accomplished he commenced his detailed studies of comminution processes which resulted in the publication of some 17 papers in association with the vtious members of his mineral dressing section. Based on this work mathematical models of grinding were developed and then applied to in-depth analysis of the behaviour of mineral beneficiation plants throughout Australia. 0 EXsevierSequoia/Rinted in The Netherlands
.
_:-..
_,
_:_;
:,
2
His activities expanded in 1970 when the staff of the CSIRO Ore Dressmg -Se&on:were. transferred. to his MirieraI Dressing Section_ In consequence. he resumed studiesof flotation ._ and, combining this work with his earlier studies on comminution, laid the foundation forthe. development of diagnostic metallurgy in Aust@ia. Appointed Chief of the Division of Chemical Engineering in 1974 &be&me responsible for_ a wider range of research activities embracing the pyrometaihngicai area. His adminis*tiv.e commitments were further increased in 1979 when he became responsible for the CSIRO D&i-sion of Applied Geomechanics, which duty he relinquished in 1981 due to iii health. .His contributions to mineral processing research were recognized by the 1977 Robert H. Richards Award of the American Institute of Mining, Metallurgical and PetroIeum Engineers, also by his election in 1976 to the Australian Academy of Technological Sciences. Dr. Kelsaii was a foundation Regional Editor of this Journal and in this duty he applied the same diligence and analysis to papers submitted for publication as he did to his own experimental and theoretical work, no doubt to the considerable emb arrassment of some potential authors who might have substituted imagination for IO&_ His creative thoughts and incisive, critical mind will be sadly missed in the international mineral dressing scene. A. B. Whitehead
Readers of Powder Technology will be very sad to learn of the sudden death of Dr. John He.mey- Dr;-,Hersey had beena member of the-Editorial Board of the Journal for many years-The pap& submitted by hi%‘and his co-authors from the Victorian College of Pharmacy on the ordered mn&$ of s&d particles have given_riseto anew approach:to the problems of [email protected] for%dation. -His efforts &r-behalf of the. journal will be seriously missed. -The foiIowiri&rib&e w&s :writt%n by Professor B. .W_.Barry of the .Dniversity of Bradford -: -who has been a close friend of Drl Hen&y for-more thti 20 years. _
.-
:.-
-3.
It was witl&de&&nse of shock-and perSonal lo& that I heard that John Hersey. had died while stiIl in his &id-forties when about to leave -Australia for one of his welcome visits -& Europe. John was an oui&andin~ phtiac&.&al scientist at the very top of his profession, who had made signZicant-contributions to pharmacy, particularly in the academic and industrial spheres. John’s areas of- exp&ise were widespread and they encompassed powder technology, tabletting, dosage. forms and formulation, quality control, analysis, stability testing, industrial safety, good manufacturing practice and pharmaceutical product registration. His recent work on ‘ordered mixing’ has revolution&d our approach to-the homogeneity of particulate solids- In all these aspects of science, John was able to apply physical chemistry in a way which yielded a fundamental understanding of complex materials without losing practical relevance. It was probably the combination of his being a pharmacist and an engineer which enabled him to translate fundamental concepts to the practical realities of the manufacturing process. John graduated from the School of Pharmacy, University of London, in 1957 and he was awarded his Ph.D_ there for a study on frictional effects during the compaction of solids. He registered as a pharmacist in 1960 and then worked for a time in the pharmaceutical development laboratory of Burroughs Wellcome and Company in Dartford. He then returned to the School of Pharmacy as a lecturer, before moving to Sandoz at Basle in Switzerland. In 1971 he transferred to Australia where he was appointed Sigma professor at the Victorian College of Pharmacy. He was also made Kansas professor of pharmaceutics, which appointment allowed him to co-direct a joint Ph.D. programme of pharmaceutical research with Professor Takeru Higuchi of the University of Kansas_ It was mainly because of John’s reputation and knowledge in the induslirial aspects of pharmacy that the Institute of Drug Technology (IDT) was established in Melbourne in 1975. Under his guidance, IDT has performed contract research for the pharmaceutical and allied industries in drug synthesis and analysis and in pharmaceutical formulation and biopharmaceutics. During this period of his career, it was my good fortune to collaborate with John in the development and testing of a topical hydrocortisone product which is now used clinically in _4ustmlia. In 1975, a further highlight in John’s career was the award of a D-SC. by the University of London. John was the author of many papers published in international journals and he held several patents. He was the joint author of a number of books, and the scientific approach which he brought to his projects serves as a model to new investigators_ I know that his example and advice were much valued, particularly by his research students who were fortunate to find such an ideal mentor during the early years of their professional lives. I had known John since 1962 from our days at London University, but our family contacts went back further as my wife went to the same school as John and his wife, MO. In addition to the memory of him as a scientist is the enduring memorial in our minds and hearts of John as a truly gentle man. He was never known to criticise or to speak ill of anyone, and everyone without exception who knew him respected him and valued his friendship_ His unfailing cheerfuhress, together with his characteristic laugh, will be sadly missed. My final memory is of the happy time I spent last year with him and his family in their home in Australia. Our sympathies are with his wife MO and daughters, Sharon, Debbie and Jenny_ B. W. Barry
PROFESSOR
JOHN A. HERSEY
MEMORIAL
SCHOLARSHIP
Professor John A. Hersey died in Melbourne on 14 February 1982 aged 45 years_ He had held the position of Sigma Industrial Professor in Pharmaceutics at the Victorian College of Pharmacy and was the Chairman of the Institute of Drug Technology Ltd., the contract research and development arm of the College_
4
John’s friends across the world have decided to establish the John A_ Hersey Memorial Scholar.ship in recognition of the great contribution John has made to-pharmaceutical technology, to the pharmaceutical sciences and to pharmacy education. A trust fund will be established by the Victorian College of Pharmacy to endow a perpetual scholarship for a student to proceed to the degree of Master of Pharmacy_ it is felt that this is the best way to remember John and. to recognise his achievements. Donations (which are tax deductable) should be sent to: Dr. G_ N. Vaughan Dean Victorian College of Pharmacy Ltd. 381 Royal Parade Parkville Vie. 3052 Australia Cheques should be made payable to ‘John A. Hersey Memorial Scholarship’; it is hoped that pharmacists, academics, the pharmaceutical industry and John’s many friends will support the appeal_ A memorial plaque will be placed in the offices of the Institute of Drug Technology listing all contributors to the appeal; it will also pay tribute to the life of John Hersey.
Dr.
G. M. Kanapilly
On July 14z 1982, Dr. George M. Kanapilly passed away due to a heart attack. George was very well known in the community of aerosol and particle science. He was one of the leaders in the field of method development for studying the physical and chemical properties of fine particles. In the mid-1960 period, he applied techniques in radio chemistry to the study of assaying alkaline earth and lanthanide radionuclides. In addition he was responsible for developing several methods for generating well-characterized radio-tagged aerosols. George was a member of AAAS, the Health Physics Society and the American Association for Aerosol Research. He wiIl bc mourned by his friends throughout the fine particle community as well as by his fellow workers at the Lovelace Inhalation Toxicology Research Institute_ A. Lieberman
(1982)1-
4
In Memoria
D_ F_ KelsaU, Ph.D., FTS With the death on 15th April, 1982 at the age of 64 of Denis (Kelly) Kelsall, the field of mineral processing research lost one of its most productive and colourful workers. He started his distinguished career when he entered Cambridge University as a Queens College Exhibitioner and Foundation Scholar and ultimately graduated with first class honours in chemistry, physics and mineralogy in the Part I Natural Science Tripos and in Chemistry in Part II. Joining Imperial Chemical Industries Central Research Laboratory at Widnes, U-K., he first worked in the organic chemical field_ The outbreak of hostilities interrupted his scientific career and resulted in him joining the Royal Air Force in 1941 as a pilot in Coastal Command, where he served until 1945. In 1947 he joined the Atomic Energy Research Establishment (AERE) at Harwell where, after spending a short period at Chalk River in Canada on isotope separation, he commenced his long involvement with the minerals industry_ After spending a further two years in Canada studying mineral dressing techniques at the Bureau of Mines he started his classic studies of hydrocyclone operation at the Harwell laboratories of AERE. His first paper on this work earned him the 1952 Moulton Medal of the Institution of Chemical Engineers and this paper, together with a subsequent publication in Chemical Engineering Science, forms the most comprehensive study of the subject available to the present day. In 1953 Dr. Kelsall left Harwell to work for Rhoanglo Mines Services in Rhodesia and during the five years he spent in Africa he gained a deep insight into the problems associated with translating scientific research into industrial practice_ In particular he concentrated in relating the results of laboratory studies of grinding and flotation to performance in full scale plant. He joined the Commonwealth Scientific and Industrial Research Organization in Australia in 1958 and remained there until his death. His first major achievement after joining CSIRO was the development of the Cyclosizer for the determination and isolation of sub-sieve size fractions. This having been accomplished he commenced his detailed studies of comminution processes which resulted in the publication of some 17 papers in association with the vtious members of his mineral dressing section. Based on this work mathematical models of grinding were developed and then applied to in-depth analysis of the behaviour of mineral beneficiation plants throughout Australia. 0 EXsevierSequoia/Rinted in The Netherlands
.
_:-..
_,
_:_;
:,
2
His activities expanded in 1970 when the staff of the CSIRO Ore Dressmg -Se&on:were. transferred. to his MirieraI Dressing Section_ In consequence. he resumed studiesof flotation ._ and, combining this work with his earlier studies on comminution, laid the foundation forthe. development of diagnostic metallurgy in Aust@ia. Appointed Chief of the Division of Chemical Engineering in 1974 &be&me responsible for_ a wider range of research activities embracing the pyrometaihngicai area. His adminis*tiv.e commitments were further increased in 1979 when he became responsible for the CSIRO D&i-sion of Applied Geomechanics, which duty he relinquished in 1981 due to iii health. .His contributions to mineral processing research were recognized by the 1977 Robert H. Richards Award of the American Institute of Mining, Metallurgical and PetroIeum Engineers, also by his election in 1976 to the Australian Academy of Technological Sciences. Dr. Kelsaii was a foundation Regional Editor of this Journal and in this duty he applied the same diligence and analysis to papers submitted for publication as he did to his own experimental and theoretical work, no doubt to the considerable emb arrassment of some potential authors who might have substituted imagination for IO&_ His creative thoughts and incisive, critical mind will be sadly missed in the international mineral dressing scene. A. B. Whitehead
Readers of Powder Technology will be very sad to learn of the sudden death of Dr. John He.mey- Dr;-,Hersey had beena member of the-Editorial Board of the Journal for many years-The pap& submitted by hi%‘and his co-authors from the Victorian College of Pharmacy on the ordered mn&$ of s&d particles have given_riseto anew approach:to the problems of [email protected] for%dation. -His efforts &r-behalf of the. journal will be seriously missed. -The foiIowiri&rib&e w&s :writt%n by Professor B. .W_.Barry of the .Dniversity of Bradford -: -who has been a close friend of Drl Hen&y for-more thti 20 years. _
.-
:.-
-3.
It was witl&de&&nse of shock-and perSonal lo& that I heard that John Hersey. had died while stiIl in his &id-forties when about to leave -Australia for one of his welcome visits -& Europe. John was an oui&andin~ phtiac&.&al scientist at the very top of his profession, who had made signZicant-contributions to pharmacy, particularly in the academic and industrial spheres. John’s areas of- exp&ise were widespread and they encompassed powder technology, tabletting, dosage. forms and formulation, quality control, analysis, stability testing, industrial safety, good manufacturing practice and pharmaceutical product registration. His recent work on ‘ordered mixing’ has revolution&d our approach to-the homogeneity of particulate solids- In all these aspects of science, John was able to apply physical chemistry in a way which yielded a fundamental understanding of complex materials without losing practical relevance. It was probably the combination of his being a pharmacist and an engineer which enabled him to translate fundamental concepts to the practical realities of the manufacturing process. John graduated from the School of Pharmacy, University of London, in 1957 and he was awarded his Ph.D_ there for a study on frictional effects during the compaction of solids. He registered as a pharmacist in 1960 and then worked for a time in the pharmaceutical development laboratory of Burroughs Wellcome and Company in Dartford. He then returned to the School of Pharmacy as a lecturer, before moving to Sandoz at Basle in Switzerland. In 1971 he transferred to Australia where he was appointed Sigma professor at the Victorian College of Pharmacy. He was also made Kansas professor of pharmaceutics, which appointment allowed him to co-direct a joint Ph.D. programme of pharmaceutical research with Professor Takeru Higuchi of the University of Kansas_ It was mainly because of John’s reputation and knowledge in the induslirial aspects of pharmacy that the Institute of Drug Technology (IDT) was established in Melbourne in 1975. Under his guidance, IDT has performed contract research for the pharmaceutical and allied industries in drug synthesis and analysis and in pharmaceutical formulation and biopharmaceutics. During this period of his career, it was my good fortune to collaborate with John in the development and testing of a topical hydrocortisone product which is now used clinically in _4ustmlia. In 1975, a further highlight in John’s career was the award of a D-SC. by the University of London. John was the author of many papers published in international journals and he held several patents. He was the joint author of a number of books, and the scientific approach which he brought to his projects serves as a model to new investigators_ I know that his example and advice were much valued, particularly by his research students who were fortunate to find such an ideal mentor during the early years of their professional lives. I had known John since 1962 from our days at London University, but our family contacts went back further as my wife went to the same school as John and his wife, MO. In addition to the memory of him as a scientist is the enduring memorial in our minds and hearts of John as a truly gentle man. He was never known to criticise or to speak ill of anyone, and everyone without exception who knew him respected him and valued his friendship_ His unfailing cheerfuhress, together with his characteristic laugh, will be sadly missed. My final memory is of the happy time I spent last year with him and his family in their home in Australia. Our sympathies are with his wife MO and daughters, Sharon, Debbie and Jenny_ B. W. Barry
PROFESSOR
JOHN A. HERSEY
MEMORIAL
SCHOLARSHIP
Professor John A. Hersey died in Melbourne on 14 February 1982 aged 45 years_ He had held the position of Sigma Industrial Professor in Pharmaceutics at the Victorian College of Pharmacy and was the Chairman of the Institute of Drug Technology Ltd., the contract research and development arm of the College_
4
John’s friends across the world have decided to establish the John A_ Hersey Memorial Scholar.ship in recognition of the great contribution John has made to-pharmaceutical technology, to the pharmaceutical sciences and to pharmacy education. A trust fund will be established by the Victorian College of Pharmacy to endow a perpetual scholarship for a student to proceed to the degree of Master of Pharmacy_ it is felt that this is the best way to remember John and. to recognise his achievements. Donations (which are tax deductable) should be sent to: Dr. G_ N. Vaughan Dean Victorian College of Pharmacy Ltd. 381 Royal Parade Parkville Vie. 3052 Australia Cheques should be made payable to ‘John A. Hersey Memorial Scholarship’; it is hoped that pharmacists, academics, the pharmaceutical industry and John’s many friends will support the appeal_ A memorial plaque will be placed in the offices of the Institute of Drug Technology listing all contributors to the appeal; it will also pay tribute to the life of John Hersey.
Dr.
G. M. Kanapilly
On July 14z 1982, Dr. George M. Kanapilly passed away due to a heart attack. George was very well known in the community of aerosol and particle science. He was one of the leaders in the field of method development for studying the physical and chemical properties of fine particles. In the mid-1960 period, he applied techniques in radio chemistry to the study of assaying alkaline earth and lanthanide radionuclides. In addition he was responsible for developing several methods for generating well-characterized radio-tagged aerosols. George was a member of AAAS, the Health Physics Society and the American Association for Aerosol Research. He wiIl bc mourned by his friends throughout the fine particle community as well as by his fellow workers at the Lovelace Inhalation Toxicology Research Institute_ A. Lieberman