- Walker Mining & Milling Inc
- Walnut Creek Mining Co
- Ward Enterprises Inc
- Washington Group Intl
- Washington Group Intl
- Washington Group Intl
- Wegner Quartz Crystal Mines
- Wellbore Navigation
- Werner Mining Co
- West Ridge Resources Inc
- Western Exploration Inc
- Western Fuels Assn Inc
- Western Fuels Assn Inc
- Western Goldfields Inc
- Western Mining & Minerals
- Western Mining Action
- Western Mining Svc LLC
- Western States Minerals
- Western States Minerals Corp
- Westmont Mining Inc
- Wharf Resources LTD
- Whelan's Mining & Exploration
- White Knight Gold US Inc
- White Mountain Mining Affinity
- White Mountain Mining Co Dip
- White Mountain Mining Co Dip
- White Mountain Mining LLC
- Wildcat Mining
- Williams Brothers Coal Co
- Williams Farms Shell
- Wind River Mining
- Wise Mining Inc
- WOLD Talc Co
- Wombat Mining & Exploration
- Woodman Mining
- Woodman Three Mine Co Inc
- World Minerals Inc
- XMV Mining # 32
- Yogo Creek Mining
- Young Mine Shop
- Z Coal Co
- Z O Resources
- Zemer International
- Zeo Tech Corp
- Zeotech Corp
- Ziegler Chemical & Mineral
