http://www.heraldandnews.com/news/article_d96131cc-cfc2-11e2-ae9c-0019bb2963f4.html
Since 2009, the BLM has approved 23 solar and 8 wind energy development right-of-way applications. In two proposed rights-of-way, mining claims were located after the right-of-way applications were submitted but before the rights-of-way could be authorized. In the two years before the interim temporary Final Rule went into effect, 437 new mining claims were located within wind energy right-of-way application areas in Arizona, California, Idaho, Nevada, Oregon, Utah, and Wyoming; another 216 new mining claims were located within solar energy right-of-way application areas.
In the BLM’s experience, some of these mining claims are likely to be valid and/or filed without consideration of the pending ROW application, but others are likely to be speculative and not located for mining purposes. The latter are likely filed for no purpose other than to provide a means for the mining claimant to compel payment from the ROW applicant or grantee in exchange for relinquishing the mining claim. While it is relatively easy and inexpensive to locate a mining claim because a mining claim location requires no prior approval from the BLM, it can be difficult, time-consuming, and costly to extinguish a claim.