Mr. Preston C. F. West, chief consulting engineer of the Calumet & Hecia Mining Company, died of heart failure in Boston on January 11. He was born in 1835, and had just begun the study of civil and mining engineering when the Civil War broke out. He served throughout the whole of the war and then became a mining engineer in Central and South America. He made a number of surveys on the Pacific coast for Professor Agassiz, and in this way became identified with the Calumet & Hecia property.4108
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I am trying to identify the officers in this picture with William F Smith in 1862 at Malvern Hill. http://memory.loc.gov/cgi-bin/query/h?ammem/cwnyhs:@field(DOCID+@lit(ad09050))

I have identified Preston West as one of Smith's officers, but haven't been able to find a picture of him to see if he is in the picture.4109
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Another copy of the picture of Smith and his officers says that Captain CPF West is in the picture. http://www.flickr.com/photos/usnationalarchives/3995289025/

Preston CF West served as a surveyor on the staff of General Smith. Here are more references to his service:

http://www.nauticalcharts.noaa.gov/history/CivilWar/people.php?person=19

http://www.lib.noaa.gov/noaainfo/heritage/coastsurveyvol1/CW2.html this report has many references to Preston West, including this line:

"To Preston C.F. West goes the accolade for being the first to understand the necessity for military status for Coast Survey officers."

http://www.11thcvi.org/Historical_files/64_4.pdf

http://books.google.com/books?id=T0ZHAQAAIAAJ&pg=PA76&lpg=PA76&dq=preston+c+f+west&source=bl&ots=-DXhOa_g9m&sig=-bs9TiBsw3xYwHkZJczwZAxifFA&hl=en&ei=VfqYTrzrM_PYiQL0453PDQ&sa=X&oi=book_result&ct=result&resnum=5&ved=0CDcQ6AEwBA#v=onepage&q=preston%20c%20f%20west&f=false

http://books.google.com/books?id=c5fhAAAAMAAJ&pg=PA9&dq=preston+c+f+west&hl=en&ei=o_6YTvOGNaqOiALK6K20BQ&sa=X&oi=book_result&ct=result&resnum=3&ved=0CDYQ6AEwAjgU#v=onepage&q=preston%20c%20f%20west&f=false

http://books.google.com/books?id=m6sOAQAAMAAJ&pg=PA525&dq=preston+c+f+west&hl=en&ei=o_6YTvOGNaqOiALK6K20BQ&sa=X&oi=book_result&ct=result&resnum=7&ved=0CEsQ6AEwBjgU#v=onepage&q=preston%20c%20f%20west&f=false

http://query.nytimes.com/gst/abstract.html?res=F70E17FA355F10738DDDAD0894DA415B8085F0D3

He died Jan 11, 1901, in Boston http://books.google.com/books?id=Bd0vAAAAYAAJ&pg=PA65&dq=preston+c+f+west&hl=en&ei=gP2YTrXSM5PYiQL71KnSDQ&sa=X&oi=book_result&ct=result&resnum=10&ved=0CF0Q6AEwCQ#v=onepage&q=preston%20c%20f%20west&f=false4109