Entrer en contact
Splendide article
  1. Accueil >
  2. prospection d'or jackadgery

prospection d'or jackadgery

prospecting, search for economically exploitable mineral deposits. until the 20th century prospecting involved roaming likely areas on foot looking for direct indications of ore mineralization in outcrops, sediments, and soils. colours have been a traditional guide to ores. the reds, browns, and

Produits recommandés

dernières nouvelles