1) About 877,000 hours 2) About 877,000 hrs 3) Any 100 yrs 4) Cook fish Cajun-style 5) Decimal meas 6) Five score yrs 7) Fivescore yrs 8) Hundred yrs 9) Many yrs 10) MCMI to MM 11) Millennium div 12) Millennium division 13) One hundred yrs 14) Part of CST 15) Period of 100 yrs Found on https://www.crosswordclues.com/clue/cen
Comité Européen de Normalisation, aka European Committee for Standardisation. The body responsible for developing European Standards, often referred to as ‘Euro-Norms or EN for short. Found on https://www.rightonblackburns.co.uk/resources/glossary/copper