NEW YORK ( TheStreet) -- Harsco Corporation (NYSE: HSC) is trading at unusually high volume Thursday with 1.9 million shares changing hands. It is currently at 4.1 times its average daily volume and trading down $1.33 (-4.5%) at $28.49 as of 3:11 p.m. ET. Harsco has a market cap of $2.5 billion and is part of the basic materials sector and metals & mining industry. Shares are up 5.3% year to date as of the close of trading on Wednesday. Harsco Corporation provides industrial services and engineered products worldwide. The company operates in four segments: Harsco Infrastructure, Harsco Metals & Minerals, Harsco Rail, and Harsco Industrial. The company has a P/E ratio of 173, below the average metals & mining industry P/E ratio of 283.1 and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Harsco as a hold. The company's strengths can be seen in multiple areas, such as its revenue growth, largely solid financial position with reasonable debt levels by most measures and increase in stock price during the past year. However, as a counter to these strengths, we also find weaknesses including disappointing return on equity, poor profit margins and weak operating cash flow. You can view the full Harsco Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are falling on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVDOWN to 95370 or select from multiple alert options.