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John L. McAdam

John McAdam was a Scottish engineer who was largely responsible for transforming road building into a science.

As a youth, McAdam worked for an uncle in New York and managed to amass a considerable fortune. He returned to Scotland in 1783, and pursued other interests, including the development of a durable road surface. He held the position of turnpike trustee in several municipalities in Scotland and England.

His process involved laying a base of large stones and topping them with crushed stone and gravel. The built-up road bed allowed drainage and a slightly convex surface helped to assure runoff. No bonding agent was used; the materials were forced into place by a large weighted roller at the time of construction, and later kept in place by the weight of road traffic.

Most new roads in Europe in the mid-19th century were constructed in this manner, as well as many in the United States.

The term "macadam" came to be applied to a variety of other road surfaces in later years.

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John L. Lewis (1880 - 1969)
John L. Lewis John L. Lewis was born in Lucas, Iowa, on Feb.12, 1880, to Tom Lewis, a coal miner from Wales, and Ann Watkins, the daughter of a founder of the local Mormon church. The first of seven children, Lewis completed nearly 10 years of ...
http://www.aflcio.org/aboutus/history/history/lewis.cfm?RenderForPrint ...

Astronaut Bio: John L. Swigert
Johnson Space Center Houston, Texas 77058 NAME: John L. Swigert, Jr. NASA Astronaut (Deceased) PERSONAL DATA: Born in Denver, Colorado, on August 30, 1931. Single. Died December 27, 1982, of cancer. EDUCATION: Attended Blessed Sacrament School ...
http://www.jsc.nasa.gov/Bios/htmlbios/swigert-jl.html

LEAP Speakers: Judge John L. Kane
... of authority, and ignorant of the compelling force of forgiveness." Judge John L. Kane has been a United States District Judge since 1977. Since he became a Senior United States District Court Judge in 1988 he has stopped hearing criminal ...
http://www.leap.cc/speakers/kane.htm

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