Last year saw the fewest U.S. mining deaths since such data was recorded, but events so far this year suggest that 2016 will not be nearly as safe for coal miners.

The fatal explosion at the Upper Big Branch mine in 2010 shocked the nation. It was the worst mine disaster in the United States in decades, with 29 coal miners losing their lives. Earlier this month, jurors in West Virginia sent a clear message that no mine operator is above the law when they found former Massey Energy CEO Don Blankenship guilty of conspiracy to willfully violate mine health and safety standards.

Late last year, performances resumed in a Cirque du Soleil show after changes were made to the choreography and equipment used in the scene in which a performer died in a fall.

The death of a 52-year-old contractor, crushed by a conveyor carriage weighing nearly 4 tons at an automotive assembly plant, could have been averted if his employer followed federal safety standards, OSHA investigators determined.

Stronger safety measures may have saved the lives of two workers who died at a Pearl Harbor naval maintenance facility in December 2014 after being struck by a 7-ton buoy, which has led OSHA to order safety upgrades.

A 31-year-old assembly technician had only been working for a battery charger manufacturer for about a month when he was killed on the job.

OSHA’s national Workers’ Memorial Day commemoration this year has a specific theme: toxic chemical exposure. The ceremony, which will take place April 28 from 2-3 p.m. at the Frances Perkins Building Auditorium in Washington, D.C., will include: