What is the scope and field of application of the NCh349.Of1999 official Chilean standard? a. It establishes the minimum safety measures to be ad...
What is the scope and field of application of the NCh349.Of1999 official Chilean standard?
a. It establishes the minimum safety measures to be adopted in open-pit excavations, excluding underground excavations.
b. It applies to excavations carried out for construction works of any nature.
c. Both a and b are correct.
a. It establishes the minimum safety measures to be adopted in open-pit excavations, excluding underground excavations.
b. It applies to excavations carried out for construction works of any nature.
c. Both a and b are correct.
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