Related Clues:

• Sought gold
• Like 14-Across
• Dug coal
• Taken from veins, perhaps
• Like 19-Across
• Contested
• Dug
• Availed oneself of
• Went (for)
• Went for the gold, in a way
• Searched for a vein
• Looked for gold or silver
• Entered a competition
• Extracted with picks
• Went head-to-head