Skip Main Navigation
Skip to site alert
Heinz History Center
Heinz History Center
Select a Location
See What's On
Heinz History Center
Sports Museum
Fort Pitt Museum
Meadowcroft Rockshelter
Site
Tickets
Join
Donate
Search
Menu
Skip Sub Navigation
Collections
People
Exhibitions
Search
Favorites
Rights & Reproductions
About
Search
Advanced Search
Choose Thesaurus
Authorities
Search within current Thesaurus
Show only matches
There are no search results!
Term:
Basic Oxygen steelmaking
Objects
View all (1)
Image Not Available
Hat, Hard
c. 1970
Powered by
eMuseum
Site Menu
Utility
Tickets
Donate
Host an Event
Shop
Site
Visit
Heinz History Center
Western Pennsylvania Sports Museum
Fort Pitt Museum
Meadowcroft Rockshelter and Historic Village
What’s On
Event Calendar
Exhibits
Heinz History Center
Western Pennsylvania Sports Museum
Fort Pitt Museum
Meadowcroft Rockshelter and Historic Village
Research
Explore Our Collections
Detre Library & Archives
African American Program
Rauh Jewish History Program & Archives
Italian American Program
Publications
Contribute to Our Collections
Join & Give
Become a Member
Make a Donation
Commemorative Gifts
Planned Giving
Contribute to Our Collections
Learn
For Schools & Teachers
Scout Programs
America 101
Virtual Tours
Blog
Videos & Podcasts
About
Our People
Press Releases, Awards & Honors
History Center Affiliates Program
Event Rentals
Contact Us
Work With Us
Blog
Search
Submit
For You
Kids & Families
Groups
Educators
Members
navigate_before
navigate_next