— Tawana Resources, an Australian iron-ore company, said it had suspended "all non-essential field activities within Liberia" and sent all non-essential African workers, expatriates and contractors home.
— London-based mining company African Minerals has begun imposing health checks and travel restrictions on employees in the region.
— Canadian Overseas Petroleum, based in Calgary, has stopped drilling in Liberia. And some of its expatriate employees have left the country.
— ExxonMobil said in a statement that its offices remain open and that "we're taking precautions to ensure the health and safety of our employees." The company has offices in Liberia, Nigeria and several other African nations.
— Chevron, which has an office in the Liberian capital of Monrovia and is in the process of exploring for oil off Liberia's coast, said it's "closely monitoring the outbreak of Ebola virus in West Africa." But the company wouldn't say whether it was withdrawing any employees or taking any other steps as a result of the outbreak.
So far, the economic damage has not affected West Africa's biggest economy, Nigeria's, though the disease has already spread to that country.
"It's not stopped commerce; it's not stopped buying," said Danladi Verheijen, managing director of the investment firm Verod Capital. "The flights are still full going into Nigeria."
Timi Austen-Peters, chairman of the Nigerian engineering and manufacturing firm Dorman Long, met in Washington on Friday with investors who were interested in Africa. Ebola, he says, didn't come up in the discussion.
"We were having a good old-fashioned business meeting," he says. "They were not in any way spooked."
AP Business Writers Jonathan Fahey and Scott Mayerowitz in New York and Marcy Gordon in Washington contributed to this report.