Saw in the local paper a mention about the Secacus Junction railroad transfer station in northern NJ. Seems that they forgot about the task of changing out the light bulbs mounted in high locations in the ceiling of the place when it was designed. Seems that they had to lower one "crane" thru an opening in the roof with another crane. And that the "crane" lowered into the place was needed to reach the light bulbs that needed changing. I think that they changed out every bulb to avoid having newly burnt out ones a month later. Cost something like $10000 just to rent the cranes. Those bulbs better last a good while! Seems that even industrial and commercial sometimes get it bad.