File:Building and engineering news (1916) (14778433041).jpg

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English:

Identifier: buildingengineer1616cont (find matches)
Title: Building & engineering news
Year: 1914 (1910s)
Authors: Contractors' and Dealers' Association of California
Subjects: Architecture Building Construction industry Engineering
Publisher: San Francisco : L. A. Larson
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library

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e salts that it is usually sold andused. These are all white or nearlywhite substances, whose appearance isno more remarkable than common saltor baking powder. Radium is foundin nature in such exceedingly smallquantities that it is never visible evenwhen the material is examined withmicroscope. Ordinarily radium orecarries only a small fraction ofgrain per ton of material and radiumwill never be found in large quantitybecause it is formed by the deca.v ofuranium, a process which is wonder-fully slow, and radium itself decaysand changes to other elements so rap-idly that it is impossible for it to ac-cumulate naturally in visible masses..Minerals that carry radium, however,are fairly easy to determine. One ofthem, pitchblende, as generally found,is a black mineral about as heavy asordinary iron, but much softer. Theprincipal radium mineial, carnotite.has a bright canary-yellow color, andi.s generally p.>wd«ry. There are otherradium-be.irinu niiii.iiils of le.^s Im-portance. >.wr
Text Appearing After Image:
San Francisco, Cal., April i<), l9Ui elephones D<mel«» ^J^ SCHUMACHER WALL BOARD Main oHice and factory, 58th, San J^CdrO ^^^^^^ ^^^^^ ^ UNIVERSAL BED Latest and Best in Wall Beds. This bed is not fastened to any door ordoor jamb. It is portable--movable-youcan move it to any part of the room orbuilding. Goes through any stock door6ft. Sin. high and 18 in. or more wide. H. E. Simpton & Co. Display Room Monadnock Bidg., San Francisco Telephone Douglas 3111 ^^

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https://www.flickr.com/photos/internetarchivebookimages/14778433041/

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Volume
InfoField
1916
Flickr tags
InfoField
  • bookid:buildingengineer1616cont
  • bookyear:1914
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Contractors__and_Dealers__Association_of_California
  • booksubject:Architecture
  • booksubject:Building
  • booksubject:Construction_industry
  • booksubject:Engineering
  • bookpublisher:San_Francisco___L__A__Larson
  • bookcontributor:San_Francisco_Public_Library
  • booksponsor:San_Francisco_Public_Library
  • bookleafnumber:566
  • bookcollection:sanfranciscopubliclibrary
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14778433041. It was reviewed on 30 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

30 September 2015

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