Complex sentence: Michelsen was lost at sea 28th of December 1910 in Antarctica, and the company stopped whaling activities at Norðdepli in 1912 as the station was sold to A/S Suderø but newer saw use again.
Split into simpler sentences: Michelsen was lost at sea 28th of December 1910 in Antarctica, and the company stopped whaling activities at Norðdepli in 1912. The station was sold to A/S Suderø but newer saw use again.