“Back pre-1970s, I’m guessing a lot of copper was coming from a lot higher-grade mines … as we’ve been mining more and more of these large-scale deposits that are low grade, the cost on a per-pound basis has gone up.”

Source: https://investingnews.com/trilogy-metals-announces-potential-for-by-product-germanium-at-the-bornite-copper-cobalt-project-alaska/

Definitely higher-grade than expected.

Source: https://steelersdepot.com/2023/12/steelers-vs-patriots-week-14-pff-grades-and-total-snaps/

Limited shallow historic drilling on both projects encountered weakly anomalous gold but, importantly, was too shallow in the epithermal system to adequately test for higher-grade mineralization in the boiling zone at depth.

Source: https://theclarion.ca/media-release/headwater-gold-acquires-additional-gold-project-in-the-aurora-district-nevada-and-outlines-2023-work-plan/?utm_source=rss&utm_medium=rss&utm_campaign=headwater-gold-acquires-additional-gold-project-in-the-aurora-distric

The encompassing halos and higher-grade mineralized chutes within, remain open for expansion to surface and to depth.

Source: https://investingnews.com/grid-battery-metals-exploring-highly-prolific-lithium-assets-in-nevada/

The proposed measures include stricter security requirements for problematic vacant buildings, including the use of higher-grade boarding materials, security fences, cameras, and security patrols.

Source: https://winnipeg.ctvnews.ca/winnipeg-mayor-announces-new-measures-to-crack-down-on-vacant-and-derelict-buildings-1.6409326

Thicker and higher-grade mineralization intersected closer to the surface as anticipated.

Source: https://investingnews.com/international-lithium-announces-engagement-of-red-cloud-securities/

This is a ~500,000-ounce per annum operation, with over 16 million ounces of gold resources, and an average underground grade of ~9.0 grams per ton of gold, but i-80 appears to have the higher-grade deposit to the southwest.

Source: https://seekingalpha.com/article/4582336-i-80-gold-buy-the-dips?source=feed_all_articles

Through trenching and excavation for the sample we have unearthed historic workings that clearly were focused on higher-grade mineralization, this will provide us with key information to aid in future targeting.

Source: https://theclarion.ca/media-release/tocvan-outlines-high-grade-gold-results-for-start-of-diagnostic-leach-study-stockpile-of-bulk-sample-complete/?utm_source=rss&utm_medium=rss&utm_campaign=tocvan-outlines-high-grade-gold-results-for-start-of-diagnostic-l

Within the southeastern portion of the Santa Fe deposit, higher-grade gold and silver resources may positively influence project economics.

Source: https://investingnews.com/barrick-reports-stronger-q4-gold-production/