Investors turn up the heat on natural gas

Reuters reports that a group of shareholders, worried about the environmental damage from drilling in the Marcellus Shale, is pressuring gas companies for greater transparency and more safety assurances.

The shareholder proposal campaign, aimed at 12 companies including Chesapeake Energy Corp (CHK.N), EOG Resources Inc
(EOG.N) and Exxon Mobil Corp (XOM.N), was sparked by mounting worry about chemicals used in a process to extract gas from rock called hydraulic fracturing, the groups said.

The groups behind the shareholder proposal: Green Century Funds and the Investor Environmental Health Network.

Stock quotes: Chesapeake, EOG, Exxon.