LONDON -- I've searched the market to find three blue-chip shares that have fallen heavily. Are they now worth buying?

BG Group (LSE: BG) (NASDAQOTH: BRGYY) is in the process of ramping up production from its oil and gas acreage offshore Brazil.

Earnings per share (EPS) for 2013 is expected to be 13.2% ahead of the amount achieved in 2012, before rising another 20.1% in 2014 as more wells come onstream.

Dividends at the company are expected to continue their gradual progression, hitting an expected yield for 2014 of 1.8%.

Shares in BG fell heavily in October as the company scaled back its own production forecasts. If BG can demonstrate the production growth forecast for 2014, I expect that the shares could return near to their previous highs.

Shares in mining group Anglo American (AAL 16.10%) are down 27.5% in the last 12 months.

The company has recently been struggling with industrial disputes at its platinum mines in South Africa. This has hit both production and investor perceptions of risk.

Anglo American's recent final results revealed a 10% decline in revenues. EPS halved. Operating profits from industrial metals such as copper and iron ore also suffered badly.

Unfortunately, no imminent upturn in fortunes is in sight. Anglo American will have to convince the markets that they can deliver on forecasts for 2013 or I see the shares falling further.

In the last year, the price of gold has fallen 10.1%. This month alone, the 'barbarous relic' is off by 3.6%.

It should be no surprise therefore to learn that shares in gold producer Randgold Resources (LSE: RRS) (NASDAQ: GOLD) are down 23.2% in the last 12 months.

That fall does not tempt me. Currently, Randgold shares trade on a 2013 price-to-earnings ratio of 14.4. Earnings are expected to increase 35.9% for 2014.

However, with stock markets showing large gains and economic worries easing, incentives to own gold are diminishing. If the price of gold continues to post significant falls, shares in companies like Randgold Resources could fall hard.

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