Hazardous industrial locations require specialized portable lighting to prevent explosions Something as simple as flipping a hand lamp's switch to ON or brushing its metal cage against a pipe can set off a chain of tragic events that costs Learn more

When the Houston Astrodome baseball's first indoor stadium opened in 1965 it had natural grass The grass required a translucent roof to let in sunlight Unfortunately it produced such glare during day games that fielders routinely lost track of Learn more