Not all the towers along a transmission line are identical. Look closely at a tower where the line makes a sharp turn and you will likely find it is wider and beefier than other towers along the route. The added strength and weight are needed to resist the unbalanced pull of the conductors, which might overturn an ordinary tower. These special towers are called deviation or angle towers.
The transmission-line tower everybody knows is an Erector Set latticework of steel girders and diagonal braces. The techniques for designing and building these towers are the same ones used in constructing steel bridge trusses or crane booms. The individual pieces can be made cheaply from rolled steel and then bolted together on the site. This last point is more important than it might seem: transporting a fully assembled tower 100 feet tall is an awkward and expensive business.
When poet William Blake wrote of "dark satanic mills", he couldn't have been looking at a steel mill because there were none in 1804. Nevertheless, when I visit a steel mill, Blake's phrase always comes to mind. With the heat and the pounding noise, the dust and smoke, and the red glow against the night sky, it's hard not to see these places as infernal. And yet the process of making steel also produces some of the most hauntingly beautiful images found anywhere in the world of industry.
One summer morning, the beginning of July, I got this long letter from my girlfriend, and in it she’d written that she wanted to break up with me. I’ve always felt close to you, and I still like you even now, and I’m sure that from here on I’ll continue to…et cetera, et cetera. In short, she was wanting to break it off. She had found herself a new boyfriend.
I hung my head and smoked six cigarettes, went outside and drank a can of beer, came back in and smoked another cigarette. Then I took three HB pencils I had on my desk and snapped them in half. It wasn’t that I was angry, really. I just didn’t know what to do. In the end, I merely changed clothes and headed off to work. And for a while there, everyone within shouting distance was commenting on my suddenly “outgoing disposition”. What is it about life?