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Investigators examine whether cab was struck by an object before leaving rails
Rail operator hit by labour disruption at ports on US West Coast
Barometer of economy and overall sentiment lags broader market
US corporate borrowers sell more than $6bn in notes and bonds
West coast problems a big uncertainty for largest US rail network
Container areas in Los Angeles and Long Beach often overflowing
New standards for tankers may allow the industry to abandon speed restrictions
Investment in extra capacity and rate changes illustrate the continuing potential of coal, oil and gas, writes Robert Wright
Anyone can emulate Warren, says ex-daughter-in-law
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