Crystalline Silica Resource Page

OSHA's new crystalline silica rule was finalized March 24. It reduced the permissible exposure limit (PEL) to silica in half, from 100 µg (micrograms)/cu.m to 50 µg/cu.m. AFS is committed to assisting foundries in coming into, and maintaining compliance with these new regulations, in the most effective and economical manner.


Crystalline Silica Compliance Webinar Series for AFS Members

  1. Silica Substitutes - What Will Work for Your Foundry?  Feb. 28, 2018 – Panelists: Steve Gates, Jeff Morrell, Bill Johnston, and Jerry Thiel
  2. How to Select an Industrial Hygienist and What to Expect When They Come  March 29, 2018 – Presenter: Kay Rowntree
  3. Respiratory Protection and Medical Surveillance for Silica  April 26, 2018 – Presenter: Kay Rowntree
  4. Control of Silica: Part 1- Exposure Control Options  May 30, 2018 – Bob Scholz
  5. Countdown to Compliance Under OSHA's Final Silica Rule  June 19, 2018 – Presenter: Bradford T. Hammock
  6. Control of Silica Exposures: Part 2- Defining Root Causes and Evaluating Options for Silica Exposure Control  June 28, 2018 – Presenter: Bob Scholz
  7. Housekeeping & Silica Exposure Control Plans July 26, 2018 - Presenter: Eric Pylkas
  8. Silica Q&A August 30, 2018 - Presenters: Tom Slavin, Kay Rowntree, Bob Scholz, Eric Pylkas

Update on Respirable Silica - What You Should be Doing Now  Nov. 7, 2017 – Presenter: Tom Slavin

AFS Webinar on OSHA's Final Rule and Its Impact on Metalcasters  April 12, 2016 – Presenters: Tom Slavin and Stephanie Salmon


Signage for Regulated Areas

Timeline and Resource Links

Silica Compliance Timeline (AFS Members Only)

OSHA Enforcement Documents

OSHA Interim Enforcement Guidance for the Respirable Crystalline Silica in General Industry standard, 29 CFR 1910.1053 – OSHA’s guidance to its compliance safety and health officers on what to look for when inspecting a foundry for RCS compliance, and explanations of what justifies a violation and citation


Industrial Hygiene Companies That Are AFS Members

Sand and Non-Silica Media Vendor List


Finding Assistance for Cost-Effective Sampling

The 3 Most Common Styles of Respirable Samplers

Detailed Information on the Rule

OSHA Resources

Crystalline Silica Overview 

Silica Control Resources

Silica PEL Calculator (Excel Spreadsheet)

PPE Guide for Metalcasting Operations (Book)

Silica Exposure Control Plan Template

Case Studies

The C.A. Lawton Co. Case Study: Reducing Silica Exposures Through Engineering Controls and Work Practices 

Clearing the Air at Acme Foundry: Integrated Engineering Design of a New Casting Cleaning and Finishing Facility 

Silica Dust Control Improvement: Grinding of Iron Castings with Portable Tools at Kennedy Valve Foundry in Elmira, New York 

For further information, email Stephanie Salmon, AFS Washington Office, or call 202-452-7135.