ALLIANCE MINE OWNERS EXPLAIN SHUTDOWN

ALLIANCE RESOURCE PARTNERS, L.P. Reports Second Quarter 2020 Financial and Operating Results

Strong execution of plans to optimize cash flow and control costs led to total debt reduction of $49.6 million

TULSA, OKLAHOMA, July 27, 2020 — Alliance Resource Partners, L.P. (NASDAQ: ARLP) today reported a net loss attributable to ARLP of $46.7 million, or $(0.37) per basic and diluted limited partner unit for the quarter ended June 30, 2020 (the “2020 Quarter”) compared to net income attributable to ARLP of $58.1 million, or $0.44 per basic and diluted limited partner unit for the quarter ended June 30, 2019 (the “2019 Quarter”). The decrease in net income attributable to ARLP in the 2020 Quarter was primarily due to our decision to temporarily cease coal production at five of our seven mining complexes at the beginning of the 2020 Quarter in response to the impacts of the COVID-19 pandemic and coal market deterioration. Production days were cut in half compared to the quarter ended March 31, 2020 (the “Sequential Quarter”) as we gradually resumed production during the 2020 Quarter. (Unless otherwise noted, all references in this release to “net income (loss)” refer to “net income (loss) attributable to ARLP.”)

“As we cautioned in ARLP’s last earnings release, we expected the energy demand destruction caused by the COVID-19 pandemic to negatively impact our results for the 2020 Quarter,” said Joseph W. Craft III, Chairman, President and Chief Executive Officer. “For the first half of 2020 coal-fired generation in the eastern U.S. declined 33% compared to the same time period in 2019. Demand for oil and natural gas also fell precipitously, driving commodity prices lower and leading operators to curtail production. As a result, Consolidated Segment Adjusted EBITDA for the 2020 Quarter was $62.1 million compared to $165.3 million in the 2019 Quarter and $111.7 million in the Sequential Quarter. While the pandemic continues to create uncertainty in the global economy and suppress energy demand, our customers have indicated their intention to take all tons contracted for this year.”

Operations Update

In response to the impacts of the COVID-19 pandemic and coal market deterioration, ARLP announced earlier this year that it would temporarily halt production operations at all of its mining complexes in the Illinois Basin and its MC Mining complex in East Kentucky (see March 30, 2020 and April 9, 2020 Press Releases). With an objective of reducing coal production to match existing contracted sales commitments for 2020, currently targeted at 27.0 million tons and 28.0 million tons, respectively, we planned to curtail production at these operations as long as it was possible to meet customer requirements from existing coal inventories. Throughout the 2020 Quarter, ARLP monitored coal inventories at each location and worked closely with customers to determine when

it would be necessary to resume coal production. Consistent with this plan, underground production operations resumed in May at the River View and Warrior mines in the Illinois Basin and subsequently at each of the remaining mining complexes – Gibson and Hamilton in the Illinois Basin and MC Mining in Appalachia. All seven of our mining complexes are now producing coal. However, several of these mines are running at less than capacity due to a limited spot market in the U.S. and a seaborne market that continues to be sub-economic for U.S. production.

Safety First has been the highest priority at ARLP throughout our history and this focus has never been more important than today. Our operating teams have successfully overcome the challenges created by pandemic-related disruptions delivering record safety results during the first half of this year. In response to the pandemic, ARLP quickly implemented and has continued to enhance health and safety protocols designed to contain and mitigate the risk of infection from COVID-19. The safety of our employees, their families and communities as well as vendors and suppliers visiting our locations remain a priority for ARLP.

In the 2020 Quarter, production volumes from our oil & gas mineral interests increased 16.4% compared to the 2019 Quarter, primarily as a result of additional mineral interests acquired in the Wing Acquisition. Due to the pandemic, oil & gas volumes declined as operators responded to lower demand and weak commodity prices by shutting in wells leading to a 17.0% reduction in production volumes compared to the Sequential Quarter. Weak commodity prices also drove ARLP’s average sales price realization per BOE in the 2020 Quarter lower by 44.0% and 34.3% compared to the 2019 and Sequential Quarters, respectively. For the 2020 Quarter, lower prices more than offset the benefit of increased volumes, resulting in a 38.0% decline in Segment Adjusted EBITDA for our Minerals segment compared to the 2019 Quarter. Sequentially, lower prices and volumes combined to reduce Segment Adjusted EBITDA from Minerals by 50.0%.