Unappreciated by Street, charts say buy

Companies that are closely pegged to natural resources have taken a hit lately, especially those that track crude oil, which has been languishing in the $90's. However, according to chart patterns it may be a good time to buy at least some related names.

That's Cramer's takeaway after reviewing technical analysis provided by Bob Lang, the founder and senior strategist at ExplosiveOptions.net and a Cramer colleague at The Street.

"Lang believes the moment has come to start buying the best natural resource stocks out there, the ones with the strongest charts, and based on his track record, I think this is an argument worth listening to. This group has been lagging the market for a while now, but Lang sees that coming to an end," Cramer said. ". His favorite natural resource names? National-Oilwell Varco, the maker of oil rigs, Cliffs Natural Resources, the iron ore supplier, and Tesoro, the oil refiner.

Here's the analysis:

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National-Oilwell Varco

Looking at the daily chart of National-Oilwell Varco, Lang sees a confluence of bullish patterns; 1) the Moving Average Convergence Divergence or MACD is making a positive crossover, 2) volume is strong on days when shares rally and 3) the stock gapped higher after it reported earnings.

Turning attention toward the risk versus the reward, Lang believes there's a strong floor of support at $79 – which is about $3 lower from where the stock was trading at the time of writing. However he believes upside could be substantial;

Lang think charts could be making a so-called cup and handle pattern, one of the most reliable bullish signals there is. With the power of this cup and handle, Lang believes that National Oilwell Varco could be headed to new all-time highs.

Cliffs Natural Resources

According to Lang, charts of are also making positive trendlines. 1) Shares are rising on strong volume, 2) the stock made a so-called golden cross pattern, when the 50-day moving average crosses above the 200-day and 3) the moving average convergence divergence line made a bullish crossover.

However, Lang thinks the piece de resistance is something called an inverse head and shoulders pattern – a fairly reliable bullish formation. Based on these patterns, Lang could see Cliffs Natural Resources rallying to $45, a 70% gain from where it was trading today, Tuesday November 12th.

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In the case of , Lang says 1) chart patterns just broke out of a cup and handle pattern 2) shares broke above the 200-day moving average and 3) the stock made a bullish crossover on the MACD indicator.

Lang views the combination as something like a neon sign that flashes buy. In fact, he sees clear sailing for Tesoro to $58.

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