How many total railroad workers?

From: uselevi@aol.com

I am trying to do some research on workers during specific years, but have failed to find any websites that will give me specific answers.

The questions:

How many total railroad workers in the:

1900-
1942-
1950-
1975-
2000-
2010-

And how many female railroad workers in the same years?

UPRR section camp called 'Peru' aka 'Burning Rock Cut'

From: jwmacna@ilstu.edu

I am writing my thesis on a UPRR section camp called 'Peru,' and I'm looking for as much information as I can get to that end. Please let me know if you know anything about the Peru (alternately called 'Burning Rock Cut' Camp) Camp in southwest Wyoming ...

James MacNaughton
Historical Archaeology
Illinois State University