MINE UNION'S LEADER HALTS TALKS, CALLING A STRIKE âINEVITABLEâ
Miller walks out of talks with coal operators, calling strike on Dec 6 inevitable; cites operators' refusal to discuss saving of health and retirement system and restoration of med benefits cut last summer; operators express willingness to continue talks; strike is expected to have little natl econ impact, but it will be unusually hard on miners, who will lose all health and retirement benefits as soon as it begins (M)