While being tested briquettes were mostly stored under constant temperature and humidity, but for a few days they were stored in open air and the strengths measured were very stable for 60 days but declined significantly after 90 days.
While being tested briquettes were mostly stored under constant temperatureand humidity, but for a few days they were stored in open air and the strengths measuredwere very stable for 60 days but declined significantly after 90 days.