Waste in the ponds produced by leaching gold from ore is a source of potential environmental dangers.
A tactical nuclear strike can be another potential environmental danger.
( z1 possible :ARG1 ( z2 endanger :ARG0 ( z3 strike :mod ( z4 nucleus ) :mod ( z5 tactical ) ) :ARG1 ( z6 environment ) :mod ( z7 potential ) :mod ( z8 another ) ) )