Until the early Sixties, parts of Minneapolis had alleys paved with clinkers.
The fused waste residue from industrial coal furnaces, clinkers are black vitreous pebbles pocked with iridescent blue holes. The city dumped fresh clinkers into our alleyway every other year then had a heavy roller crush them down and even them out.
I initially thought clinkers were tiny meteorites that a merry crew of astronauts dug up from some star-swept gravel pit to lay at my feet as a reminder of the strange grandeur of outer space. My mother was only too happy to set me straight about such an innocent fantasy:
"They're nasty leftover trash from the NSP plant" she told me kindly.
Clinkers were hell on your pants when playing kickball, or with any other activity that required you to slide or get on your knees. With sharp obsidian-like edges, clinkers could rip open a pair of jeans at the knees in an instant -- and also leave a livid line of scrapped skin oozing blood.
My mother kept the iodine bottle handy all summer, as well as an assortment of knee patches, for when I would come keening into the house with a bloody knee.
The clinkered allway an important social haunt for boys during my young summers.
We not only played games in them, but hunkered down amidst the clinkers to speculate in privacy on the theory that all sisters were aliens in disguise getting ready to take over the world, al a The Twilight Zone. Or what the best bait was for catching carp down on the Mississippi. The consensus ran heavily in favor of a gob of Velveeta cheese mixed with canned corn.
We also went treasure hunting through the neighbor's galvanized trash cans in search of dull kitchen knives with broken handles, unstrung tennis rackets, racy paperbacks, and, best of all, empty whipped cream cans.
A discarded whipped cream can placed in a burning trash can is a pyrotechnic marvel to rival the Fourth of July. Back in those dirty unenlightened days each household burned its own trash in a metal barrel. The fires were lit by a responsible adult, who rarely stayed around until the flames went out. So when I and my cronies would latch onto a whipped cream can we quickly found an untended trash fire. We then hurled in the whipped cream can and sat back to await the fun. First a geyser of parboiled cream would come squirting out of the can. A few minutes later the can itself would explode with enough volume to rattle window panes while ashes and burning bits of trash rocketed up and then spread out over the landscape in a pyroclastic flow.
Needless to say, I and my pals would take to our heels as soon as the explosion occurred. Safely away from the mayhem, we'd stop to giggle hysterically and think of ourselves as invulnerable ruffians. Maybe that same puerile rush is part of the appeal to modern terrorists . . .
In the winter the clinkered alleyway was a dismal and forlorn place. The clinkers mixed in with the slush gave the appearance of a long ribbon of filthy gray slurry. It provided good traction for cars; much better than the cement pavement that replaced it. But that was of no concern to me as a boy. The trash fires smoldered so much during snowfalls that we couldn't enjoy tossing in our whipped cream hand grenades without the discomfort of asphyxiation.
Besides, in the winter we had the ice rink warming shed at Van Cleve Park. Redolent of damp wool socks and a kerosene heater, it was a place where boys could tie granny knots in their broken laces and talk shop about how many sticks of Bonomo Turkish Taffy a guy could actually stuff in his mouth before choking. At five cents a bar, it was a feasible experiment.
My own record was six sticks -- but I made the mistake of using banana. I think with chocolate I could have gotten up to ten, easy peasy.