{"id":333259,"date":"2016-06-06T22:38:56","date_gmt":"2016-06-06T22:38:56","guid":{"rendered":"http:\/\/sentryair.com\/blog\/?p=333259"},"modified":"2020-09-08T17:05:54","modified_gmt":"2020-09-08T17:05:54","slug":"osha-releases-final-rule-on-respirable-crystalline-silica","status":"publish","type":"post","link":"https:\/\/www.sentryair.com\/blog\/industry-news-standards\/osha-releases-final-rule-on-respirable-crystalline-silica\/","title":{"rendered":"OSHA releases final rule on respirable crystalline silica"},"content":{"rendered":"<p class=\"p1\"><span class=\"s1\"> <a href=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/silica-dust.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft  wp-image-333273\" src=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/silica-dust.jpg\" alt=\"silica-dust\" width=\"172\" height=\"171\" srcset=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/silica-dust.jpg 480w, https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/silica-dust-150x150.jpg 150w, https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/silica-dust-300x298.jpg 300w, https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/silica-dust-302x300.jpg 302w\" sizes=\"(max-width: 172px) 100vw, 172px\" \/><\/a>Original regulation on occupational exposure to respirable crystalline silica \u2013 a known human carcinogen \u2013 had not been updated in over 40 years despite years of studies showing its debilitating and often fatal health effects on workers. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">In most recent years, the use of silica in the workplace has expanded across several new industries and it is estimated that 2.3 million workers are exposed to occupational respirable crystalline silica. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">In an effort to greater protect workers from developing life-threatening silicosis, OSHA set out on a multi-year operation to drastically update the original silica regulation.<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">After consulting experts, listening to stakeholders, comprehending multiple studies, and pouring over thousands of documents, OSHA has released its final rule on respirable crystalline silica exposure in the workplace. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\"><b>New regulation and what it means<\/b><\/span><\/p>\n<p class=\"p1\"><span class=\"s1\"> <a href=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/image_01.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft  wp-image-333274\" src=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/image_01.png\" alt=\"image_01\" width=\"226\" height=\"177\"><\/a>The new rule reduces the permissible exposure limit (PEL) for respirable crystalline silica to 50 micrograms per cubic meter of air, averaged over an 8-hour shift; roughly 50% of the previous PEL for general industry. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">OSHA estimates this standard will save the lives of more than 600 workers each year and prevent more than 900 cases of silicosis each year once the full effects of the rule are realized. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">Under the new rule, employers are required to limit access to high exposure areas, provide training, provide respiratory protection when controls are not enough to limit exposure, provide written exposure control plans, and measure exposures in some cases. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">According to OSHA, industries affected by this new rule include: <\/span><\/p>\n<ul>\n<li class=\"li1\"><span class=\"s1\">Construction<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Glass Manufacturing<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Pottery products<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Structural clay products <\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Concrete products<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Foundries<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Dental laboratories<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Paintings and coatings<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Jewelry production<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Refractory products<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Ready-mix concrete<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Cut stone and stone products<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Abrasive blasting in maritime, construction, and general industry<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Refractory furnace installation and repair<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Railroad transportation<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Oil and gas operations<\/span><\/li>\n<\/ul>\n<p class=\"p1\"><span class=\"s1\">The final rule takes effect on June 23, 2016. The following industries must comply with the rule according to the schedule below: <\/span><\/p>\n<ul>\n<li class=\"li1\"><span class=\"s1\">Construction \u2013 June 23, 2017<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">General Industry &amp; Maritime \u2013 June 23, 2018 <\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Hydraulic Fracturing &#8211; June 23, 2018 for all provisions except engineering controls, which have a compliance date of June 23, 2021. <\/span><\/li>\n<\/ul>\n<p class=\"p1\"><span class=\"s1\"><b>Testing: Sentry Air vs. Silica <\/b><\/span><\/p>\n<p class=\"p3\"><span class=\"s1\"><a href=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/k33821025.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft  wp-image-333275\" src=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/k33821025.jpg\" alt=\"k33821025\" width=\"122\" height=\"122\" srcset=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/k33821025.jpg 170w, https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/k33821025-150x150.jpg 150w\" sizes=\"(max-width: 122px) 100vw, 122px\" \/><\/a>Many of Sentry Air Systems (SAS) customers encounter silica in their work environment so in preparation of this new rule, SAS developed a comprehensive in-house testing procedure to determine the effectiveness of our particle filters against respirable crystalline silica. A brief overview of the test procedure is outlined below. <\/span><\/p>\n<p class=\"p4\"><span class=\"s3\">Highlights<\/span><\/p>\n<ul>\n<li class=\"li1\"><span class=\"s1\">An SAS 30\u201d Wide Ductless Fume Hood [<a href=\"https:\/\/www.sentryair.com\/specs\/Ductless-Fume-Hood-Spec-330-DCH.htm\"><span class=\"s4\">SS-330-DCH<\/span><\/a>] equipped with a Carbon Pre-Filter Pad [SS-300-CFP] and HEPA Main Filter [SS-300-HF] was used. <i>Note: This is the standard equipment and filter media recommended by SAS for most applications where particles from dust or powders are a concern. <\/i><\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Air samplers where calibrated so that their flow rates reflected current NIOSH and\/or OSHA test protocol requirements, and an average of the before and after readings was calculated.<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">The samplers were placed at multiple pre-determined locations. <\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">5 lbs. of commercially available silica was used for the test.&nbsp;<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Agitation of the silica was performed during the 160-minute testing period to generate a consistent plume.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Testing was performed in an in-house lab that was air conditioned and non-vented.&nbsp;<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">A third-party analytical lab analyzed the samples and provided a findings report. <\/span><\/li>\n<\/ul>\n<p class=\"p1\"><span class=\"s3\">Findings<\/span><\/p>\n<table style=\"height: 630px;\" width=\"469\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td valign=\"top\"><\/td>\n<td colspan=\"3\" valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>Sample Indicated Concentration<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"middle\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>Test Point<\/b><\/span><\/p>\n<\/td>\n<td valign=\"middle\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>Sample Volume (m<\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: xx-small;\"><b><sup>3<\/sup><\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>)<\/b><\/span><\/p>\n<\/td>\n<td valign=\"middle\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>SiO<\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: xx-small;\"><b><sub>2<\/sub><\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b> (mg\/m<\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: xx-small;\"><b><sup>3<\/sup><\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>)<\/b><\/span><\/p>\n<\/td>\n<td valign=\"middle\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>SiO<\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: xx-small;\"><b><sub>2<\/sub><\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b> (PPM)<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>T1A<\/b><\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">0.41312<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">0.63<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">0.26<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>T1B<\/b><\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">0.40132<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">&lt;0.03<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">&lt;0.01<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>T1C<\/b><\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">0.42108<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">&lt;0.03<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">&lt;0.01<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>T1D<\/b><\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">0.40161<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">&lt;0.03<\/span><\/p>\n<\/td>\n<td valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">&lt;0.01<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\"><\/td>\n<td colspan=\"3\" valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>Indicated Performance<\/b><\/span><\/p>\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b>SiO<\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: xx-small;\"><b><sub>2<\/sub><\/b><\/span><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\"><b> (%Efficiency)<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\"><\/td>\n<td colspan=\"3\" valign=\"top\">\n<p align=\"center\"><span style=\"color: #000000; font-family: 'Trebuchet MS'; font-size: medium;\">\u226595%*<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"p6\"><span class=\"s1\"><i>*Actual efficiency may be much higher due to the prescribed instrumental technique limitations on ambient background detection of a minimal concentration of 0.01 PPM.<\/i><\/span><\/p>\n<p class=\"p1\"><span class=\"s3\">Summary<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\"><a href=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/ss-330-dch.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft  wp-image-333277\" src=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2016\/06\/ss-330-dch.jpg\" alt=\"ss-330-dch\" width=\"188\" height=\"236\"><\/a>Sentry Air Systems\u2019 on-staff chemist, Luke Turner, summarizes these findings in his report. An excerpt is below while the full report can be found on our <a href=\"https:\/\/www.sentryair.com\/testing\/Industrial_Hygiene%2520Report_SiO2_exp_STM4.pdf\"><span class=\"s4\">website<\/span><\/a>. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">\u201cGiven the results presented here, it is likely that the use of the SS-330-DCH configured with SS-300-HF for work with SiO<\/span><span class=\"s5\"><sub>2<\/sub><\/span><span class=\"s1\"> and related respirable particulates would prove beneficial in reducing operator exposure to respiratory hazards presented by these materials. Further, it is to be expected that use of this equipment may reduce operator exposure to respiratory hazards below what exposure would be expected if no precautions were taken\u2026 <b>the system effectively reduces silicon dioxide particulates to a level comparable to the NIOSH PEL of 50 \u00b5g\/m<\/b><\/span><span class=\"s5\"><b><sup>3<\/sup><\/b><\/span><span class=\"s1\"><b> for respirable SiO<\/b><\/span><span class=\"s5\"><b><sub>2<\/sub><\/b><\/span><span class=\"s1\">.\u201d <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\"><b>What to do next<\/b><\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">If your industry is affected by this new rule we recommend you contact a Sentry Air Systems specialist who will work with you to provide an economical, effective solution that will help you work towards OSHA compliance. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\"><b>Contact Sentry Air<\/b><\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">For more information about controlling silica dust in the workplace, contact Sentry Air Systems at 800.799.4609, email <a href=\"mailto:sales@sentryair.com\"><span class=\"s4\">sales@sentryair.com<\/span><\/a>, visit our <a href=\"https:\/\/www.sentryair.com\"><span class=\"s4\">website<\/span><\/a> or fill out the feedback form below. <\/span><\/p>\n<p class=\"p1\"><span class=\"s1\"><b>Resources<\/b><\/span><\/p>\n<ul>\n<li class=\"li1\"><span class=\"s1\">OSHA Fact Sheet: Workers\u2019 exposure to respirable crystalline silica: Final rule overview <a href=\"https:\/\/www.osha.gov\/Publications\/OSHA3683.pdf\"><span class=\"s4\">https:\/\/www.osha.gov\/Publications\/OSHA3683.pdf<\/span><\/a> <\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">OSHA Fact Sheet: OSHA\u2019s crystalline silica rule: Construction <a href=\"https:\/\/www.osha.gov\/Publications\/OSHA3681.pdf\"><span class=\"s4\">https:\/\/www.osha.gov\/Publications\/OSHA3681.pdf<\/span><\/a> <\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">OSHA\u2019s final rule to protect workers from exposure to respirable crystalline silica <a href=\"https:\/\/www.osha.gov\/silica\/index.html\"><span class=\"s4\">https:\/\/www.osha.gov\/silica\/index.html<\/span><\/a>&nbsp;<\/span><\/li>\n<li class=\"li7\"><span class=\"s7\">OSHA: Silica website <a href=\"https:\/\/www.osha.gov\/dsg\/topics\/silicacrystalline\/\"><span class=\"s8\">https:\/\/www.osha.gov\/dsg\/topics\/silicacrystalline\/<\/span><\/a> <\/span><\/li>\n<li class=\"li7\"><span class=\"s7\">NIOSH: Silica website <a href=\"http:\/\/www.cdc.gov\/niosh\/topics\/silica\/\"><span class=\"s8\">http:\/\/www.cdc.gov\/niosh\/topics\/silica\/<\/span><\/a> <\/span><\/li>\n<\/ul>\n<p class=\"p1\"><span class=\"s1\"><b>Previous Blogs<\/b><\/span><\/p>\n<ul>\n<li class=\"li7\"><span class=\"s7\">Silica health risks go beyond the oilfields &#8211; <a href=\"http:\/\/sentryair.com\/blog\/powder-containment\/silica-health-risks-go-beyond-the-oilfields\/\"><span class=\"s8\">https:\/\/www.sentryair.com\/blog\/powder-containment\/silica-health-risks-go-beyond-the-oilfields\/<\/span><\/a><\/span><\/li>\n<li class=\"li7\"><span class=\"s7\">Dangerous dust: Control measures during concrete testing &#8211; <a href=\"https:\/\/www.sentryair.com\/blog\/portable-fume-extractors\/dangerous-dust-control-measures-during-concrete-testing\/\"><span class=\"s8\">https:\/\/www.sentryair.com\/blog\/portable-fume-extractors\/dangerous-dust-control-measures-during-concrete-testing\/<\/span><\/a><\/span><\/li>\n<li class=\"li7\"><span class=\"s7\">Containment of mineral dust during geological sample preparation &#8211; <a href=\"https:\/\/www.sentryair.com\/blog\/ductless-fume-hood\/containment-of-mineral-dust-during-geological-sample-preparation\/\"><span class=\"s8\">http:\/\/sentryair.com\/blog\/ductless-fume-hood\/containment-of-mineral-dust-during-geological-sample-preparation\/<\/span><\/a><\/span><\/li>\n<li class=\"li7\"><span class=\"s7\">Making art can make you sick &#8211; <a href=\"https:\/\/www.sentryair.com\/blog\/health\/making-art-can-make-you-sick\/\"><span class=\"s8\">https:\/\/www.sentryair.com\/blog\/health\/making-art-can-make-you-sick\/<\/span><\/a><\/span><\/li>\n<li class=\"li7\"><span class=\"s7\">Similar hazardous fumes experience by dental technicians and ceramic artists need the attention of application specialists &#8211; <a href=\"https:\/\/www.sentryair.com\/blog\/art-making\/similar-hazardous-fumes-experienced-by-dental-technicians-and-ceramic-artists-need-the-attention-of-application-specialists\/\"><span class=\"s8\">https:\/\/www.sentryair.com\/blog\/art-making\/similar-hazardous-fumes-experienced-by-dental-technicians-and-ceramic-artists-need-the-attention-of-application-specialists\/<\/span><\/a><\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Original regulation on occupational exposure to respirable crystalline silica \u2013 a known human carcinogen \u2013 had not been updated in over 40 years despite years of studies showing its debilitating and often fatal health effects on workers. In most recent years, the use of silica in the workplace has expanded across several new industries and&#8230;  <a class=\"excerpt-read-more btn btn-primary\" style=\"display:block; color: #fff;  margin-top: 10px; max-width:120px;\" href=\"https:\/\/www.sentryair.com\/blog\/industry-news-standards\/osha-releases-final-rule-on-respirable-crystalline-silica\/\" title=\"Read OSHA releases final rule on respirable crystalline silica\">Learn More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[2838,2839],"tags":[],"class_list":["post-333259","post","type-post","status-publish","format-standard","hentry","category-health-risks-safety","category-industry-news-standards"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>OSHA releases final rule on respirable crystalline silica - Sentry Air Systems, Inc.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sentryair.com\/blog\/industry-news-standards\/osha-releases-final-rule-on-respirable-crystalline-silica\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"OSHA releases final rule on respirable crystalline silica - Sentry Air Systems, Inc.\" \/>\n<meta property=\"og:description\" content=\"Original regulation on occupational exposure to respirable crystalline silica \u2013 a known human carcinogen \u2013 had not been updated in over 40 years despite years of studies showing its debilitating and often fatal health effects on workers. In most recent years, the use of silica in the workplace has expanded across several new industries and... 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