Workers in Factory — Black

3000 × 2376

Bridge under construction

1700 × 1366

Workers on Bridge Cables — Black

1920 × 1200

Medieval construction site

2433 × 1578

Aerial View of City Streets — Black, Dramatic, Afternoon

2560 × 1440

Ship Propellers in Dry Dock — Black, Industrial

2412 × 1519

Minnesota Point from Incline Railway

4000 × 3135

Car assembly in early 1900s factory

1920 × 1200

Men in factory with large machine

3030 × 3870

Construction site with crane

1492 × 1996

Building under Construction — Black, Industrial, Photograph

1024 × 781

Workers on steel beam

1478 × 1129