Original title: Picture and text | Why is the two-arm rock drilling jumbo favored? What is a drilling jumbo? What is the rock drilling jumbo used for? Rock drilling jumbo is a kind of rock drilling equipment for tunnel and underground engineering construction by drilling and blasting method. It can move and support multiple rock drills for simultaneous drilling operations. Drill jumbo can be...
Roofing 101: Understanding The Different Types Of Roofs
Have you ever thought about how big an average American house's roof is? It's well over 1,600 square feet! That's bigger than a fair number of apartments!
A roof is an essential part of every structure, but it normally doesn't get attention until it causes troubles. Knowing the variety of roofs is...
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