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Following up on its previously announced plans to go public, Nymex Holdings, parent company of New York Mercantile Exchange Inc. and the Commodity Exchange Inc. (Comex), filed plans for an initial public offering (IPO) of its common stock. In its prospectus, Nymex also outlined the potential pitfalls of simultaneously operating side-by-side electronic and open outcry pit trading.

Following up on its previously announced plans to go public, Nymex Holdings, parent company of New York Mercantile Exchange Inc. and the Commodity Exchange Inc. (Comex), filed with the Securities and Exchange Commission (SEC) Monday to offer an initial public offering (IPO) of its common stock. In its prospectus, Nymex also outlined the potential pitfalls of simultaneously operating side-by-side electronic and open outcry pit trading.

Atmos Energy said it has named Mark H. Johnson, 46, as senior vice president of nonutility operations and president of Atmos Energy Holdings, the parent company of Atmos’ nonutility operations. He will continue serving as president of Atmos Energy Marketing LLC. Johnson is replacing JD Woodward, who is retiring.

WGL Holdings Inc., parent company of gas utility Washington Gas Light, said Wednesday that it has postponed the release of its quarterly financial report because it discovered inaccuracies in prior financials regarding subsidiary Washington Gas Energy Services, Inc. (WGEServices), its energy marketing subsidiary. The company said earnings for the market unit may have been understated in certain prior periods.

The two parent companies of oil major Royal Dutch/Shell Group announced Thursday that they will unify as a single company, Royal Dutch Shell plc, beginning July 20. The two European companies have been listed independently for nearly a century.

Ownesboro, KY-based TGT Pipeline LLC, a subsidiary of Loews Corp., has changed its name to Boardwalk Pipelines LLC. The renamed company is the parent of two operating subsidiaries in the interstate gas pipeline industry, Texas Gas Transmission LLC and Gulf South Pipeline Co. LP, whose names will remain unchanged.

Ownesboro, KY-based TGT Pipeline LLC, a subsidiary of Loews Corp., has changed its name to Boardwalk Pipelines LLC. The renamed company is the parent of two operating subsidiaries in the interstate gas pipeline industry, Texas Gas Transmission LLC and Gulf South Pipeline Co. LP, whose names will remain unchanged.

In its largest property purchase to date, Alabama utility and E&P company Energen Corp. said last week that it is buying about 250 Bcfe of proved San Juan Basin coalbed methane reserves for $273 million from an unnamed private company.

In its largest property purchase to date, Alabama utility and E&P company Energen Corp. said Monday it is buying about 250 Bcfe of proved San Juan Basin coalbed methane reserves for $273 million from an unnamed private company.