By Rebecca Torrellas, Online Editor Hart Energy Publishing's Unconventional Gas Center site is offering a new feature. The UGCenter Company DataBank offers information on 135 of the most active companies in unconventional plays, ranging from shales such as the Marcellus, Eagle Ford and Avalon/Leonard to tight-gas plays in the Piceance Basin to emerging Permian Basin tight-oil plays. Coalbed methane and international plays are also covered for the most active operators. The DataBank includes basic economics, land, drilling, completion, production, and reserve data where available. Links to the main sources of data, which include annual reports, most recent quarterly reports, investor presentations and websites, are included. There are also hot links to proprietary Hart directory data for most companies. Subscribe to today to get the benefits of the new DataBank.