the men accused, shean thomas schleigh. in december 2010, after early dismissal of the students, the middle school is already undergoing a chaotic and troubling situation. a man had come into the building, claiming he was looking for his little brother. school officials were soon alerted to a serious problem when they heard a 12-year-old male yelling in a bathroom in his efforts to fight off an attacker. parents were livid that someone could slip into a school and try to sexually assault a child. >> that could have been my son in the bathroom this morning, or my nephew goes here. i am very concerned about it. >> like -- why could he not have to show id before he could get past them? >> schleigh reportedly asked to see the boys genitals and the child said know. he hit the boy and dragged him into a bathroom stall. a school official went into the bathroom and stopped the attack. schleigh confessed to police and he wanted to have sex with the boys and picked the victim because of the way he looked. >> as part of the plea offer

. >> i saw a map that this area was severely shean in 1906 although almost no houses were here.e can expect the same action? >> i think you have to different differentiate, but you may not get as much damage here as you would at the shore line or san francisco bay. this is a rough site -- >> if you're going to be out in richmond, it's right there. >> yeah. i have heard that along ocean beach here and a few blocks in, there are some special hazards because of the fact that there's water underlying the ground and so on. is that -- >> yeah. there are hazards associated with anu$quake. obviously the firstçó one is ground shaking which we talked about. then there are other gee owe logic hazards and that's where the sand turns to quick sand, especially the sands that are beneath the water level. other hazards associated is lateral spedding. after the soil lick -- becomed and flows, the dense --ification. >> if i eat a box of cereal and it's full, it's two inches down. >> that's true. damages associated with those phenomenas are severe. you've seen pictures along valencia street where

typically when we're sheaning surfaces, we try to make them as polished, as reflective as possible and typical. in this we had to change our way of thinking, basically, to make it somewhat rustic and make it so that it did not reflect any light. the design process itself, we started in the middle at the document. and our primary focus was on preserving the document and providing the best things for the document. there's basically three large components. i should say four large components in this encasement and hundreds of little ones that you don't see. there's a frame on the outside. this started out as a three-inch, 300-pound block of aircraft aluminum that was machine down. the bottom of which you see the chamber, the back side of the chamber, was created out of an 800-pound block of aluminum all reduced down, which in itself when you remove that much material creates a lot of stresses and makes the machine process very iterative to get to it and maintain a very good sealing surface. the platform with the custom machining that we mentioned. another difficulty was matching the seal o

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