The combustible dust explosion at the New Jersey company injured seven employees in 2012.
The employers face more than $110,000 in fines for allegedly failing to provide protection.
States are encouraged to apply for annual CVISN and PRISM grants.
OSHA also ruled that Air Methods Corp. must pay more than $166k in back wages and damages.
Based in Austin, the Oil and Gas Division regulates the exploration, production, and transportation of oil and natural gas in Texas.
The company was cited for repeated safety hazards.
All four companies are based in Tallahassee, Fla.
The agency's preliminary fatality data for 2014 show 40 miners were killed in work-related accidents.
The penalty comes following an inspection that found an aircraft that was not in compliance.
"Every employer should have an effective safety and health management system in place to protect its most valuable asset: its employees," said MIOSHA Director Martha Yoder.
Pilots have disputed that the new regulations are necessary, however.
During the month of January, EPA wants to raise radon awareness among homeowners and business owners.
Procedures, devices, and personnel must be set in place to prevent a serious injury when a worker thinks a machine is safely off.
A "Voice of the Customer" study reveals insights into the challenges of managing an effective flame-resistant clothing program.
One takeaway: The first step to an effective risk management approach is to divest from the outcome and focus on the execution.
Many less serious incidents, as well as some serious incidents, would have been prevented had a fail-safe braking system been installed.
The Wage and Hour Division has assessed the company penalties for violating child labor laws.
Its SafeyEYE technology advances machine guarding, the unit's chairman said.
It is based on the chocolate shop hostage incident in Sydney, Australia, on Dec. 15.
The host of this new virus, called Bourbon virus, is unknown at this time, but it is thought to be transmitted through the bites of ticks or other insects.