red alder Archives -

Blowing **** up in the woods, Part 1

Explosives look like sausages. Sausages that come in fifty pound boxes and convert sections of road into little valleys for streams to run through. Sausages that are not filled with meat, but something that looks a bit like vanilla frosting. Sausages that are used, as one of the blasters said, to kill culverts.

First, you get your explosives a few miles up an overgrown ex-logging road. This involves a helicopter. Then you get yourself up there, too. This involves your legs, but might involve an ATV to carry your backpack partway.

Then, at your site, you lay out your string of sausages, like so.


Mmm, sausages…

Then, you tape them together with detonating cord (the purple stuff you see on the spool above). Each sausage, aka ‘chub,’ needs to have intimate contact with either the det cord or another chub, to make sure it all explodes together.

Taping up chubs

Once that’s set, you move on to the next site. For efficiency, you set up 3-6 shots to go off at the same time.

The blasters keep careful notes on each shot.

Then, you go back and load each string into the culverts. The culverts range from 18 to 48 inches in diameter. For the smaller ones, you can send a rope through and then pull the string. For a 24 inch culvert, you can send in an intern.

Elizabeast! My fearless intern.

For a 48 inch culvert, even a fish and wildlife biologist will fit.

A full grown biologist can be over 6 feet tall!

Then a passle of people wrassle this python like conglomeration of explosives into one end of the culvert while someone at the other end pulls on the rope to coax it through.

Feeding python into the pipe.

When there are a few shots all set up, the blasters string them together with a thin yellow plastic tubing coated inside with an explosive powder. The tubing is called shock cord, and they unspool 1200 feet of it, to make sure they’re setting the explosions off from a safe distance. To be doubly safe, everyone takes cover behind the larger trees.

Just so you know, this is what the road looks like before anything explodes.

Tune in next time for the after view….

Restoration work: red alders

This week I spent some more time in the field, this time ~~helping~~ watching some folks put trees, a.k.a. large woody debris, into a stream. This makes for good habitat for baby salmon. Although it involved a lot of tromping around in the rain and a lot of no-see-ums who wanted to chew on me, it was fun because I had the right gear to be waterproof and I got to see what is involved in the restoration process.

All the trees added to the stream were red alders, a quick growing tree that takes advantage of disturbed ground in places where there were logging roads, or river bottoms that large logs were dragged through.

Red alders are tall and have white bark, and if I went by the minimal tree knowledge I had coming into this job with the Forest Service (where I have learned much about salmon, and a little about trees) I would have tried to tell you that they were birch trees.

However, once they cut a few red alders down and dragged them around, scraping off the bark, it became obvious that the inner layer of the bark is the color of a nosebleed, hence the “red” of red alder. And I don’t think you see that in a birch…

I thought it was pretty, so I took a bunch of pictures of it. In fact, I was photographing some scraped bark when they started calling my name, and suggested I leave when everyone else was walking off, so as not to leave me alone in bear country.

For the record, there was a bear spotted, but it ran off the trail before anyone but one guy saw it. I saw the tracks, but they weren’t super big.