The overall ratings of 10 metals and mining stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

North American Palladium (PAL) ratings are on the decline this week as the company earns an F (“strong sell”). Last week, it received a D (“sell”). North American Palladium is a mineral exploration and production company. In Portfolio Grader’s specific subcategories of Earnings Revisions, Equity and Cash Flow, PAL also gets an F. To get an in-depth look at PAL, get Portfolio Grader’s complete analysis of PAL stock.

New Gold Inc.’s (NGD) rating falls to a D (“sell”) this week, down from C (“hold”) the week prior. New Gold acquires, explores, and develops gold properties. For more information, get Portfolio Grader’s complete analysis of NGD stock.

This is a rough week for Coeur Mining, Inc. (CDE). The company’s rating falls to F from the previous week’s D. Coeur Mining explores, develops, operates, and/or owns silver and gold mining properties and companies. The stock gets F’s in Equity, Cash Flow and Sales Growth. As of Dec. 24, 2014, 14.2% of outstanding Coeur Mining, Inc. shares were held short. To get an in-depth look at CDE, get Portfolio Grader’s complete analysis of CDE stock.

Alamos Gold Inc. (AGI) experiences a ratings drop this week, going from last week’s D to an F. Alamos Gold acquires, explores, develops and produces gold. The stock gets F’s in Earnings Growth, Margin Growth and Sales Growth. For more information, get Portfolio Grader’s complete analysis of AGI stock.

This week, Barrick Gold Corporation’s (ABX) rating worsens to an F from the company’s D rating a week ago. Barrick Gold makes and sells gold, and is involved with related activities such as exploration and mine development. The stock gets F’s in Equity, Cash Flow and Sales Growth. To get an in-depth look at ABX, get Portfolio Grader’s complete analysis of ABX stock.

Slipping from a C to a D rating, Keegan Resources (KGN) takes a hit this week. Keegan Resources, a junior gold company, engages in the exploration and development of gold properties in Ghana, west Africa. The stock gets F’s in Equity and Cash Flow. For more information, get Portfolio Grader’s complete analysis of KGN stock.

IAMGOLD Corporation (IAG) earns a D this week, falling from last week’s grade of C. IAMGOLD is involved in the exploration for, and development and production of mineral resource properties throughout the world. The stock receives F’s in Earnings Growth, Earnings Revisions and Equity. Cash Flow and Margin Growth also get F’s. To get an in-depth look at IAG, get Portfolio Grader’s complete analysis of IAG stock.

The rating of AngloGold Ashanti Limited Sponsored ADR (AU) declines this week from a C to a D. AngloGold Ashanti mines, extracts, and produces gold, especially in South Africa. The stock gets F’s in Earnings Revisions and Sales Growth. For more information, get Portfolio Grader’s complete analysis of AU stock.

The rating of Schnitzer Steel Industries, Inc. Class A (SCHN) slips from a D to an F. Schnitzer Steel Industries is a recycler of ferrous and nonferrous scrap metal, a recycler of used and salvaged vehicles and a manufacturer of finished steel products. The stock also rates an F in Earnings Revisions. As of Dec. 24, 2014, 10.9% of outstanding Schnitzer Steel Industries, Inc. Class A shares were held short. The trailing PE Ratio for the stock is 101.90. To get an in-depth look at SCHN, get Portfolio Grader’s complete analysis of SCHN stock.

Pan American Silver’s (PAAS) rating weakens this week, dropping to a D versus last week’s C. Pan American Silver is a silver mining company with its principal property in Peru. The stock gets F’s in Earnings Growth, Earnings Revisions and Equity. Cash Flow and Sales Growth also get F’s. For more information, get Portfolio Grader’s complete analysis of PAAS 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.