File:Advancing technology steadily improved efficiency of highway construction.jpg

From Wikisource
Jump to navigation Jump to search

Advancing_technology_steadily_improved_efficiency_of_highway_construction.jpg ‎(650 × 363 pixels, file size: 169 KB, MIME type: image/jpeg)

Summary

Description
English: Advancing technology steadily improved efficiency of highway construction, exemplified by this "train" of pavement-laying machinery developed in the 1960's. It allows continuous production of steel-reinforced concrete roadways.
Date
Source https://en.wikisource.org/wiki/Page:Making_Michigan_Move.pdf/30
Author Unknown author

Licensing

Public domain
This work is in the public domain because it was published in the United States between 1978 and March 1, 1989 without a copyright notice, and its copyright was not subsequently registered with the U.S. Copyright Office within 5 years.
Unless its author has been dead for several years, it is copyrighted in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada (50 pma), Mainland China (50 pma, not Hong Kong or Macau), Germany (70 pma), Mexico (100 pma), Switzerland (70 pma), and other countries with individual treaties. See this page for further explanation.

Deutsch ∙ English ∙ español ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ português ∙ português do Brasil ∙ русский ∙ sicilianu ∙ slovenščina ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ 中文（臺灣） ∙ +/−

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

media type

image/jpeg

checksum

f0f67eb03ba5eef6ad8c4aca7f7f976db9323c85

determination method: SHA-1

data size

172,965 byte

height

363 pixel

width

650 pixel

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current14:27, 10 December 2021Thumbnail for version as of 14:27, 10 December 2021650 × 363 (169 KB)Sp1nd01Uploaded a work by Unknown author from https://en.wikisource.org/wiki/Page:Making_Michigan_Move.pdf/30 with UploadWizard

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from "https://en.wikisource.org/wiki/File:Advancing_technology_steadily_improved_efficiency_of_highway_construction.jpg"