In 1976, in Cleveland, Ohio, Cal-OSHA conducted a test using 10 impact glass products including our 7/8” SAFE-SHIELD™.

The test consisted of mounting the windows into a box placed below the slag pit trough and molten slag poured on to the glass.

Pictured is our SAFE-SHIELD Glass just after a dump of 2900° F. slag at 4000 ft-lbs of impact. Notice the liquid steel slag is all around the box.

Of all the products tested, MacPherson and Company’s SAFE-SHIELD composite glass was the only one considered as had passed the test.

SAFE-SHIELD has an Infrared Reflective (IRR) coating on the heat side of the face plate. This allows SAFE-SHIELDto be used by itself where the depth is limited to a single glazing and as the final barrier to radiant transmitted heat.