Southdown Inc. says it is increasing its...

Southdown Inc. says it is increasing its tender offer for Moore McCormack Resources Inc., a Stamford, Conn.-based oil, gas and building materials company, to $35 per share of common stock from its previous offer of $31 per share. The increase was estimated to raise the total value of the takeover to about $450 million from a previous estimate of roughly $395 million, including offers for Moore McCormack preferred stock and subordinated debt, said officials of Houston-based Southdown, a cement and energy company. Moore McCormack said it will take the new offer under consideration.