This week, three metals and mining stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Handy & Harman (HNH) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Handy & Harman produces steel products, roofing supplies, and metal joining products. In Portfolio Grader’s specific subcategories of Earnings Momentum, Equity and Cash Flow, HNH also gets A’s. Shares of the stock have been changing hands at an unusually rapid pace, up 582.4% from the week prior. For more information, get Portfolio Grader’s complete analysis of HNH stock.

Worthington Industries, Inc. (WOR) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. Worthington Industries is a company in the metals processing industry that focuses on steel processing and manufactured metal products. At $43.27, the stock is above the 50-day moving average of $41.44. For more information, get Portfolio Grader’s complete analysis of WOR stock.

This is a strong week for Comstock Mining (LODE). The company’s rating climbs to B from the previous week’s C. Comstock Mining operates as a gold and silver mining company in Nevada. For more information, get Portfolio Grader’s complete analysis of LODE 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.