Natural Resource Partners LP NRP reported first-quarter 2016 adjusted earnings of 29 cents per unit, missing the Zacks Consensus Estimate of $1.27 by 77.2%. The figure also fell short of $1.24 per unit earned in first-quarter 2015 by 76.6%.On a GAAP basis, the partnership recorded earnings of $1.88 per unit, up 34.3% from the year-ago figure of $1.40. The difference between GAAP and adjusted earnings was due to non-cash charges for the impairment of certain assets and a one-time gain on asset sales.Natural Resource Partners LP (NRP) EPS BNRI & Surprise Percent - Last 5 Quarters | FindTheCompany Total RevenueIn the quarter under review, Natural Resource Partners’ total revenue of $102.8 million exceeded the Zacks Consensus Estimate of $91 million by 13%. Quarterly revenues, however, dropped 6.3% year over year.Highlights of the ReleaseCoal-related revenues tanked 26.3% year over year to $40.6 million from $55.1 million a year ago. The decrease is primarily attributable to lower coal sales and a decline in average coal royalty revenues.Revenues at the Soda Ash segment plummeted 21.6% to $9.8 million from $12.5 million a year ago.Revenues at the VantaCore segment dropped 7.8% to $24.7 million from $26.8 a year ago.Oil & Gas revenues surged 81.6% to $27.6 million from $15.2 million a year ago.Total operating expenses in the reported quarter declined 22.7% to $53.6 million from $69.3 million in the prior-year quarter.Financial ConditionNatural Resource Partners had cash and cash equivalents of $52.1 million as of Mar 31, 2016, up from $51.8 million as of Dec 31, 2015. Long-term debt was $1,147 million as of Mar 31, 2016, down from $1,270.3 million as of Dec 31, 2015.In the quarter under review, cash from operating activities was $19.4 million, down 65% from $55.5 million in the prior-year period.Distributable cash flow increased 9.6% to $58.4 million from $53.3 million in the prior-year quarter.Peer ReleasesCONSOL Energy Inc. CNX reported an adjusted loss of 7 cents per share for the first quarter of 2016, narrower than the Zacks Consensus Estimate of a loss of 9 cents.CNX Coal Resources LP’s CNXC first-quarter 2016 adjusted earnings of 11 cents per unit lagged the Zacks Consensus Estimate of 20 cents by a wide 45%.SunCoke Energy Inc. SXC posted first-quarter 2016 adjusted earnings of 5 cents per share, outpacing the Zacks Consensus Estimate by a penny.Zacks RankNatural Resource Partners currently has a Zacks Rank #4 (Sell).Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report CONSOL ENERGY (CNX): Free Stock Analysis Report NATURAL RSRC LP (NRP): Free Stock Analysis Report SUNCOKE ENERGY (SXC): Free Stock Analysis Report CNX COAL RESRCS (CNXC): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research