The grades of 5 Metals & Mining stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

This week, Olympic Steel, Inc.’s (ZEUS) ratings are up from a B last week to a A. Olympic Steel, Inc. processes and distributes flat-rolled carbon, stainless steel, and tubular steel products. The company also gets A’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of ZEUS stock.

Schnitzer Steel Industries, Inc. Class A (SCHN) earns a B this week, jumping up from last week’s grade of C. Schnitzer Steel Industries, Inc. Class A is a recycler of ferrous and nonferrous scrap metal, a recycler of used and salvaged vehicles and a manufacturer of finished steel products. The company also gets A’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of SCHN stock.

Stillwater Mining Company’s (SWC) ratings are looking better this week, moving up to a B from last week’s C. Stillwater Mining Company is engaged in the development, extraction, processing, refining and marketing of palladium, platinum and associated metals from a geological formation in south central Montana known as the J-M Reef and from the recycling of spent catalytic converters. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of SWC stock.

Alamos Gold Inc. (AGI) gets a higher grade this week, advancing from a B last week to a A. Alamos Gold Inc. acquires, explores, develops and produces gold. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of AGI stock.

This is a strong week for Asanko Gold, Inc. (AKG). The company’s rating climbs to A from the previous week’s B. Asanko Gold, Inc. is a gold development company focusing on near term gold production. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of AKG stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.