Download or read book Crystalline Silica written by Society for Mining, Metallurgy, and Exploration (U.S.) and published by SME. This book was released on 1998 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: In practical language, Crystalline Silica addresses what crystalline silica is, where it is found and used, and how it is identified. In addition, the book discusses the regulatory decisions yielding new interest in this ubiquitous substance and presents an overview of the techniques used to determine its presence and abundance. A list of selected readings and supplemental resources and a glossary of terms beyond the scope of this publication round out the text.
Download or read book Crystalline Silica Quartz written by F. Rice and published by . This book was released on 2000 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise assessment of the adverse effects on human health caused by exposure to quartz the most common form of crystalline silica. Quartz is a frequently occurring solid component of most natural mineral dusts. Human exposure occurs most often during occupational activities involving movement of earth disturbance of silica-containing products such as masonry and concrete or use or manufacture of silica-containing products. As respirable quartz dust particles can be inhaled and deposited in the lung the report gives particular attention to evidence of an increased risk of lung cancer in occupationally exposed workers. Most studies in laboratory animals have concentrated on adverse effects associated with long-term inhalation of particles. Effects observed include cellular proliferation nodule formation suppressed immune function and alveolar proteinosis. While exposure clearly induces pulmonary tumours in one species other species show less or no malignant tumour response. The evaluation of risks to human health draws on a large number of epidemiological studies of workers exposed to respirable quartz dust. Occupational exposure has been linked to an increased incidence of silicosis ung cancer and pulmonary tuberculosis. Studies have also documented statistically significant increases in cases of bronchitis emphysema chronic obstructive pulmonary disease autoimmune-related diseases including scleroderma rheumatoid arthritis and systemic lupus erythematosus and renal disease. In reviewing these findings the report underscores several uncertainties inherent to the study of respiratory diseases in occupational populations that complicate the assessment of risks associated with exposure to quartz dust. The need for improved methods of exposure assessment and data analysis is stressed.
Download or read book Silica written by Peter J. Heaney and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 29 of Reviews in Mineralogy provides an updated silica review which focuses on the most recent developments. This book describes the crystal structures and phase transitions of silica and its stuffed derivatives; bridges the relationship between the microstructural character of real silica minerals and the behavior of silica in the geological environment; covers Quantum mechanical considerations of the Si-O bond; shows how calculations based upon first-principles theory can explain and predict silica transitions at high temperatures and pressures; covers spectroscopic analyses of silica and how they reveal vibrational behaviors in response to variations in temperature, pressure, and composition and finally details the uses of silica for industrial purposes.
Download or read book Health Effects of Occupational Exposure to Respirable Crystalline Silica written by and published by . This book was released on 2002 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystalline Silica Primer written by and published by . This book was released on 1992 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystalline Silica Overview written by Sarkis G. Ampian and published by . This book was released on 1992 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1987, the International Agency for Research Against Cancer conducted a review of the health literature and concluded that crystalline silica was a probable human carcinogen. As a result of this finding, OSHA was required to regulate crystalline silica under its Hazard Communication Standard (HCS). The standard requires that all materials handled by OSHA-regulated facilities be labeled according to the requirements of HCS and that workers receive proper training on the handling of the material if the crystalline silica content equals or exceeds 0.1 weight percent (0.1%). MSHA currently is considering enacting its own HCS. This will be similar to OSHA's HCS. If the standard is enacted, most mineral producers will have to determine the respirable monitor filter and bulk crystalline silica contents of their ores and products so that workers and/or customers will know whether they are in compliance with the 0.1% HCS and/ or the OSHA permissible exposure level (PEL) of 50 micro-g for an 8-hour workday for respirable crystalline silica as determined from monitor samples. Two major concerns with the HCS are the widespread occurrence of crystalline silica in nature and the suitability of current technology for routinely determining crystalline silica concentrations at the 0.1% HCS level. Most ores are extracted from silica-bearing deposits, and silica is a common constituent of rocks and soils. OSHA's HCS will have the greatest impact on the producers of crushed stone, diatomite, dimension stone, gravel, industrial sand, perlite, pumice, pyrophyllite, sand, and talc because these materials frequently are shipped directly from the mill to the customer. MSHA's HCS would affect nearly all mineral producers. Those producers that have crystalline silica present in concentrations near the 0.1% cutoff point will have the most difficulty with the analysis. Crystalline silica can be quantified at the 0.1% level by X-ray difractometry in simple systems containing one, two, and possibly three minerals if (l) none of the accessory minerals has X-ray diffraction reflections that coincide or overlap with those of crystalline silica and (2) the standard has a particle size distribution and crystallinity similar to those of the sample. In some instances, it may not be possible to determine the crystalline silica content of a sample with any degree of certainty using the recommended regulatory protocol. In all cases, it is recommended that a qualified mineralogist identify the minerals in a sample prior to any regulatory analysis. Additionally, the uncertainty as to whether some silica polymorphs should be classified as crystalline or noncrystalline and the suitability of metastable high-temperature standards, such as cristobalite and tridymite, for regulatory analysis at ambient temperatures should be addressed further. This overview is written both to highlight these problems and to serve as a guide for analysts, regulators, and industry personnel who are involved in the crystalline silica issue. It also covers some of the difficulties and/or shortcomings in quantifying crystalline silica, such as the ubiquitous mineral quartz, in the workplace.
Download or read book Occupational Exposure to Crystalline Silica written by National Institute for Occupational Safety and Health and published by . This book was released on 1974 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Construction Chart Book written by CPWR--The Center for Construction Research and Training and published by Cpwr - The Center for Construction Research and Training. This book was released on 2008 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Construction Chart Book presents the most complete data available on all facets of the U.S. construction industry: economic, demographic, employment/income, education/training, and safety and health issues. The book presents this information in a series of 50 topics, each with a description of the subject matter and corresponding charts and graphs. The contents of The Construction Chart Book are relevant to owners, contractors, unions, workers, and other organizations affiliated with the construction industry, such as health providers and workers compensation insurance companies, as well as researchers, economists, trainers, safety and health professionals, and industry observers.
Download or read book Job Safety Health written by and published by . This book was released on 1975 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystalline Silica In Construction Supplement written by National Safety Compliance Services Staff and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silicosis written by Paul-André Rosental and published by JHU Press. This book was released on 2017-04-25 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive book to date on the history of silicosis and the strategies used to combat it. Despite the common perception that “black lung” has been relegated to the dustbin of history, silicosis remains a crucial public health problem that threatens millions of people around the world. This painful and incurable chronic disease, still present in old industrial regions, is now expanding rapidly in emerging economies around the globe. Most industrial sectors—including the metallurgical, glassworking, foundry, stonecutting, building, and tunneling industries—expose their workers to lethal crystalline silica dust. Dental prosthodontists are also at risk, as are sandblasters, pencil factory workers in developing nations, and anyone who handles concentrated sand squirt to clean oil tanks, build ships, or fade blue jeans. In Silicosis, eleven experts argue that silicosis is more than one of the most pressing global health concerns today—it is an epidemic in the making. Essays explain how the understanding of the disease has been shaken by new medical findings and technologies, developments in industrializing countries, and the spread of the disease to a wide range of professions beyond coal mining. Examining the global reactions to silicosis, the authors trace the history of the disease and show how this occupational health hazard first came to be recognized as well as the steps that were necessary to deal with it at that time. Adopting a global perspective, Silicosis offers comparative insights into a variety of different medical and political strategies to combat silicosis. It also analyzes the importance of transnational processes—carried on by international organizations and NGOs and sparked by waves of migrant labor—which have been central to the history of silicosis since the early twentieth century. Ultimately, by bringing together historians and physicians from around the world, Silicosis pioneers a new collective method of writing the global history of disease. Aimed at legal and public health scholars, physicians, political economists, social scientists, historians, and all readers concerned by labor and civil society movements in the contemporary world, this book contains lessons that will be applicable not only to people working on combating silicosis but also to people examining other occupational diseases now and in the future. Contributors: Alberto Baldasseroni, Francesco Carnevale, Éric Geerkens, Martin Lengwiler, Gerald Markowitz, Jock McCulloch, Joseph Melling, Julia Moses, Paul-André Rosental, David Rosner, Bernard Thomann
Download or read book Work related Lung Disease Surveillance Report written by and published by . This book was released on 1996 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystal Growth and Evaluation of Silicon for VLSI and ULSI written by Golla Eranna and published by CRC Press. This book was released on 2014-12-08 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon, as a single-crystal semiconductor, has sparked a revolution in the field of electronics and touched nearly every field of science and technology. Though available abundantly as silica and in various other forms in nature, silicon is difficult to separate from its chemical compounds because of its reactivity. As a solid, silicon is chemically inert and stable, but growing it as a single crystal creates many technological challenges. Crystal Growth and Evaluation of Silicon for VLSI and ULSI is one of the first books to cover the systematic growth of silicon single crystals and the complete evaluation of silicon, from sand to useful wafers for device fabrication. Written for engineers and researchers working in semiconductor fabrication industries, this practical text: Describes different techniques used to grow silicon single crystals Explains how grown single-crystal ingots become a complete silicon wafer for integrated-circuit fabrication Reviews different methods to evaluate silicon wafers to determine suitability for device applications Analyzes silicon wafers in terms of resistivity and impurity concentration mapping Examines the effect of intentional and unintentional impurities Explores the defects found in regular silicon-crystal lattice Discusses silicon wafer preparation for VLSI and ULSI processing Crystal Growth and Evaluation of Silicon for VLSI and ULSI is an essential reference for different approaches to the selection of the basic silicon-containing compound, separation of silicon as metallurgical-grade pure silicon, subsequent purification, single-crystal growth, and defects and evaluation of the deviations within the grown crystals.
Download or read book Structure and Chemistry of Crystalline Solids written by Bodie Douglas and published by Springer Science & Business Media. This book was released on 2007-03-20 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understandable by anyone concerned with crystals or solid state properties dependent on structure Presents a general system using simple notation to reveal similarities and differences among crystal structures More than 300 selected and prepared figures illustrate structures found in thousands of compounds
Download or read book Hamilton and Hardy s Industrial Toxicology written by Raymond D. Harbison and published by John Wiley & Sons. This book was released on 2015-04-13 with total page 1364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a concise, yet comprehensive, reference on all aspects of industrial exposures and toxicants; this book aids toxicologists, industrial hygienists, and occupational physicians to investigate workplace health problems. • Updates and expands coverage with new chapters covering regulatory toxicology, toxicity testing, physical hazards, high production volume (HPV) chemicals, and workplace drug use • Includes information on occupational and environmental sources of exposure, mammalian toxicology, industrial hygiene, medical management and ecotoxicology • Retains a succinct chapter format that has become the hallmark for the previous editions • Distils a vast amount of information into one resource for both academics and professionals
Download or read book Respirable Crystalline Silica written by Health And Safety Executive Staff and published by . This book was released on 1997 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guidance note is aimed at employers in the quarries, construction, ceramics and heavy clay industries. It discusses the following: the occurrence and use of crystalline silica; its health effects; how to do a risk assessment; prevention and control of exposure; maintenance and testing of control measures; monitoring exposure; health surveillance; notification of reportable disease; information, instruction and training; and safety representatives.
Download or read book Geology and Geochemistry of Epithermal Systems written by Byron R. Berger and published by . This book was released on 1985 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
