I need to know where you got the information. I'd prefer a website.
123566
According to Luis L'Amour, they were mostly pretty young; teenagers, a lot of them.  It was a very difficult and demanding job that did not pay very well, and the older guys basically found easier things to do.
20246
hope one of this sites would help
272356
you can get that info from http://www.howstuffworks.com
594333
go on there websites.
414909
I would like to know where J D got that information from...
11661
I dont know alot but heres a reference site you can look at.
137745
www.google.com will give it to you.  I had to find it for a paper a few months ago by myself so it's easy, try it.
448356
Take a look at the site below, the info you need may be there...;
160830
This is a great source... and if it's not in their database, they'll research it.\n\nGood luck
2518
The site below should help:
262855
Perhaps the link will help.  Good luck.
675802
here is a link. i hope you find it usefull.
510791
I just searched in google and got the site below!\n\nhope it helped!
132862
This Link Should Help.
676491
Try the website listed below.
36233
you can find some info at wikipedia, there is plenty of info there and also some web links.
7693
The school that you went to would have that information available, and may have them accesible on their website...try going to www.google.com and searching for your schools website.