Complex sentence: Most newly arriving miners found all available land for mining along the Tarryall Creek had been completely claimed by the earliest arrivees, and much resentment ensued-it was thought that the earlier miners had claimed much more land than a man could reasonably work.
Split into simpler sentences: Most newly arriving miners found that all available land for mining along the Tarryall Creek had been completely claimed by earlier arrivals, and much resentment ensued. It was thought that the earlier miners had claimed much more land than a man could reasonably work.