Mullikkoräme zinc mine was active in Pyhäjärvi between the years 1989-2000. During this time 1.2 million tonnes of ore were mined. The ore contained in average 6.08% zinc, 0.30% copper and 17.05 sulphur also one tonne of ore contained 1.01 grams of gold. The ore from the mine was transported to the mine at Pyhäsalmi to be enriched. The ore was extracted during the years 1990-1993 and 1996-2000.

Based on that paragraph can we conclude that this sentence is true?
The ore was extracted from 1989-2000 except two years because of concerns of safety.
It's impossible to say