It's tough times for the mining equipment makers. Analysts slashed estimates on Joy Global Inc. (JOY) after the company lowered full year guidance. This Zacks Rank #5 (Strong Sell) is expected to see earnings fall both in fiscal 2013 and fiscal 2014 as the global economy remains sluggish.Joy Global is one of the world's largest underground and surface mining equipment makers. It is usually one of the first beneficiaries of a global recovery, because the miners can lead a recovery but that also means it can be the first to see a slowdown.2013 Outlook CutOn May 30, Joy Global reported second quarter results which confirmed that the slowdown in the mining industry had arrived.Sales fell 12% to $1.4 billion from a year ago. Original equipment sales fell 16% while Aftermarket sank 8%. Bookings were also down 8% year over year to $1.1 billion with surface mining equipment bookings slumping 28%.In its outlook, the company said that mined commodities were generally in supply surplus so demand must increase in order to clear out the excess. The problem is, demand isn't increasing. If anything, it is turning the other way. China and Europe both remain weak with China seemingly sinking even further as the year progresses.Estimates SlashedGiven the grim outlook, it's not surprising that Joy Global cut its fully year guidance to a range of $5.75 to $5.95 from $$5.75 to $6.35.14 estimates were cut over the last 60 days to get in line with the revised guidance. The fiscal 2013 Zacks Consensus Estimate fell to $5.86 form $6.20.That is earnings contraction of 15.1% compared to fiscal 2012. The story isn't much better for fiscal 2014 either. 13 estimates have been cut for that year and earnings are also expected to decline another 4.4%.Shares SinkInvestors have been fleeing the shares all year.And while it's trading at just 8.6x forward estimates, which may seem cheap, an investor gets contracting earnings.For investors looking at the construction/mining industry, it's a hard sell right now. The Zacks Industry Rank is 244 out of 265. If you MUST own a mining equipment maker right now, only Komatsu (KMTUY) has a "buy" Zacks Rank. It is a Zacks Rank #2 (Buy). But even Komatsu is expected to see negative earnings growth next fiscal year.2013 is going to be a tough year for the whole industry. Joy Global's Zacks Rank #5 (Strong Sell) reflects that reality.Want More of Our Best Recommendations? Zacks' Executive VP, Steve Reitmeister, knows when key trades are about to be triggered and which of our experts has the hottest hand. Then each week he hand-selects the most compelling trades and serves them up to you in a new program called Zacks Confidential. Learn More>>Tracey Ryniec is the Value Stock Strategist for Zacks.com. She is also the Editor of the Turnaround Trader and Value Investor services. You can follow her on twitter at @TraceyRyniec.