The steel raja's scruples are rather more quixotic: the coalescence of the industry.

FORBES: Magazine Article

The coalescence of Republicans around a plan to substantially reform our health-care entitlements is one of the most remarkable developments of the last two years.

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The coalescence of two black holes would create even stronger gravitational waves, but physicists believe that there are fewer black holes than neutron stars, so such events would be rarer.

ECONOMIST: Fundamental physics