Investigations have placed the blame for the accident on the inadequate and unstable structure of steel cofferdams at the construction site, severe defects in the project procedures and regulation violations during the project supervision process, according to sources with the work safety committee under the Chongqing Municipal government.
You can also use various types of barbell curls in routines where you split your training into push exercises and pull exercises. With this approach, muscles that push (i.e., the triceps) and muscles that pull (i.e., the biceps) are trained on different workout days.
Zottman curls are most effective in certain set and rep ranges. Do them for 3-4 sets of 8-10 reps per arm, as well as 2-3 sets of 20-30. Within your workout, Zottmans serve as an excellent movement early on to bring blood flow to your arms and warm up your elbow flexors.