They are highly explosive, and if we keep them in our hands too long, they will tear us to pieces.
Christianity Today
The police must be congratulated for the way they dealt with a highly explosive situation.
The Sun
However, 20,000 tons of highly explosive anhydrous ammonia were reported to be on site.
The Sun
Though its big weather forecasting computer was not up to tracking highly explosive storms, the human forecasters were too enthralled by it to question its results.
Times, Sunday Times
The chemical has many legitimate uses but when mixed with other organic materials it could become highly explosive.
Times, Sunday Times