See also Architect , Landscape Architect , Urban Planner , and List Of Engineers .
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- John MacAdam - roads
- Sir John MacNeill - railways
- William Mahone - plank road, railways
- Robert Maillart - Swiss, concrete bridges
- Timothy P. Marshall - failure analysis, wind and impact engineering, Meteorologist (codeveloper of Enhanced Fujita Scale )
- Conde McCullough - bridges
- James R. McDonald - failure analysis, wind and impact engineering, mitigation (codeveloper of Enhanced Fujita Scale )
- Charles Meik - ports, railways, hydroelectric schemes
- Patrick Meik - ports, railways
- Thomas Meik - ports, railways
- Christian Menn - Swiss, known for bridges, including the Leonard P. Zakim Bunker Hill Bridge , part of the Big Dig in Boston .
- Otto Mohr - bridges, railways
- Sir John Monash - bridges
- James Morgan - Regent's Canal
- Basil Mott - mines, tunnels, bridges
Osman Ahmed Osman
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