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+--- Thread: 11. AHBC level crossing risk (/showthread.php?tid=1396)
11. AHBC level crossing risk - PJW - 01-04-2013
Having decided to defer the feedback on a question to whhich I had received no attempts, I decided that we'd use the class to discuss a different question. I hadn't intended that anyone should attempt prior, but I actually received 2 attempts and I therefore post them with comments here.
I also attach the presentation utilised when discussing how to amswer the question