Between drilling and filling with reinforced steel and concrete, it's best that construction workers don't fall down these holes that are 5-10 metres deep in some cases.
2017 roller coaster construction
2017 roller coaster construction
11 October, 2016 by Richard
Between drilling and filling with reinforced steel and concrete, it's best that construction workers don't fall down these holes that are 5-10 metres deep in some cases.
