Complex sentence: In July 1902 shareholders were told that still no ore had been processed at Klondyke, but Francis was nevertheless still promising a bright future, and indeed production started in the second half of that year.
Split into simpler sentences: In July 1902 shareholders were told that still no ore had been processed at Klondyke, but Francis was still promising a bright future. Production in fact started in the second half of that year.