Valero Energy Corp., which shuttered a major refinery over the summer, said Friday it would permanently close its Delaware City oil refinery and layoff 550 workers.

Jill Schlesinger is the Editor-at-Large for CBS MoneyWatch.com. Previously she was the Chief Investment Officer for an independent investment advisory firm and is a former options trader on the Commodities Exchange of New York. E-mail Jill your thoughts at jill.schlesinger@cbs.com.
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Practical advice and solutions for today's small business:
Building Your Business
The basics for making your business a success
Sales and Marketing
Advice and valuable techniques for improving your company's sales and marketing efforts
Management
Managing people, finances and operations
Money Matters
Staying on top of incoming revenues and outgoing expenses.
Everything you need to know to keep your IT department running smoothly:
Regulatory Resource
Staying on top of standards and federal regulations
Threat Intelligence
Security, viruses, spam and other threats
Resilient IT
The importance of investing in IT
Boardroom Strategies
How to handle the boardroom.
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