The Importance of Lighting in an Underground Environment.
Prestressed Concrete Tanks? Mundane? Or Architectural Gems?
Circular wrapped prestressed concrete tanks (WPCTs) have been built for over seven decades in the U.S.
Rankin Bridge
The Rankin Bridge is a cantilever bridge spanning the Monongahela River in Pittsburgh, PA.
Top Ten Sustainability Benefits of Shotcrete
Top Ten Sustainability Benefits of Shotcrete.
Differences and Similarities of Shotcrete Specifications
In my years of working as a shotcrete contractor in the state of Illinois, the Department of Transportation (DOT) has revised the shotcrete specification numerous times
Changing Methods of Sinking Vertical Shafts in Mining
The way the mining industry and contractors work with vertical shafts is changing through the introduction of technologies such as Murray & Roberts (M&R) Cementation?s advanced shaft-lining technology.
Changing the Traditional Shotcrete Mixture to Suit Underground Applications
Concrete mixtures used in the shotcreting process have traditionally been low-slump mixtures.
Liberty Tunnels Phase 2
The Liberty Tunnels were opened in January 1924.
Concrete Arch Bridge No. 6.45 over 31st Street, Queens, NY
The New York Connecting Railroad is a rail line in the borough of Queens in New York City and forms an important element of the Northeast Corridor