"worked their arduous way up the mining valley"; "a grueling campaign"; "tough labor"; "heavy get the job done"; "heavy likely"; "expended lots of laborious several hours on the venture"; "set a punishing pace" with the military services or field; using (or currently being) the heaviest and strongest armaments or weapons https://heavydutystainlesssteelda57889.blogcudinti.com/37171632/the-2-minute-rule-for-dampers-for-industrial-sector