prospectors have laid claim to rich deposits of gold, silver, and copper in the deep sea, foreshadowing a possible rush to the open oceans for metals and a possible fight

prospectors have laid claim to rich deposits of gold, silver, and copper in the deep sea, which foreshadows a possible rush to the open oceans for metals and possibly a fight

prospectors have laid claim to rich deposits of gold, silver, and copper in the deep sea, foreshadowing a possible rush to the open oceans for metals and possibly fighting

prospectors, having laid claim to rich deposits of gold, silver, and copper in the deep sea, and foreshadowing a possible rush to the open oceans for metals and a possible fight

prospectors having laid claim to rich deposits of gold, silver, and copper in the deep sea foreshadows a possible rush to the open oceans for metals and possibly fighting