15. GEOGRAPHIC AND SEGMENT INFORMATION

The Company currently operates in three reportable segments, which are uranium, lithium and graphite mining activities, including exploration, standby operations and restoration and reclamation activities. As a part of these activities, the Company also explores, evaluates and, if warranted, permits uranium, lithium and graphite properties. The Company's long-term assets were $24.4 million and $25.8 million as of March 31, 2019 and December 31, 2018, respectively. 100% of the long-term assets are located in the United States. The Company reported no revenues during the three months ended March 31, 2019 and March 31, 2018.

The reportable segments are those operations whose operating results are reviewed by the Chief Executive Officer to make decisions about resources to be allocated to the segment and assess its performance provided those operations pass certain quantitative thresholds. Operations whose revenues, earnings or losses or assets exceed or are expected to exceed 10% of the total consolidated revenue, earnings or losses or assets are reportable segments. Information about current assets and liabilities of the segments has not been provided because the information is not used to assess performance.

The table below provides a breakdown of the long-term assets by reportable segments as of March 31, 2019 and December 31, 2018:

	March 31, 2019

(thousands of dollars)	Corporate		Uranium		Lithium		Graphite		Total
Net property, plant and equipment	$	150	$	11,407	$	—	$	8,972	$	20,529
Restricted cash		—		3,740		—		10		3,750
Operating lease right of use assets, non-current		543		26		—		—		569

Total long-term assets	$	693	$	15,173	$	—	$	8,982	$	24,848

	December 31, 2018

(thousands of dollars)	Corporate		Uranium		Lithium		Graphite		Total
Net property, plant and equipment	$	162	$	11,418	$	—	$	8,973	$	20,553
Restricted cash		—		3,722		—		10		3,732
Notes receivable, non-current		—		1,493		—		—		1,493

Total long-term assets	$	162	$	16,633	$	—	$	8,983	$	25,778

The table below provides a breakdown of the reportable segments for the three months ended March 31, 2019 and March 31, 2018. Non-mining activities and other administrative operations are reported in the Corporate column.

	Three Months Ended March 31, 2019

(thousands of dollars)	Corporate			Uranium			Lithium			Graphite			Total
Statement of Operations
Mineral property expenses	$	—		$	553		$	1		$	80		$	634
General and administrative expenses		1,279			392			—			147			1,818
Sales and marketing expenses		—			—			—			18			18
Accretion of asset retirement costs		—			126			—			—			126
Depreciation and amortization		1			22			—			—			23

Loss from operations		1,280			1,093			1			245			2,619

Other (expense) income		(555	)		—			—			—			(555	)

Loss before taxes	$	(1,835	)	$	(1,093	)	$	(1	)	$	(245	)	$	(3,174	)

	Three Months Ended March 31, 2018

(thousands of dollars)	Corporate			Uranium			Lithium			Graphite		Total
Statement of Operations
Mineral property expenses	$	—		$	774		$	8		$	—	$	782
General and administrative		1,353			452			—			—		1,805
Acquisition related expenses		755			—			—			—		755
Accretion of asset retirement costs		—			134			—			—		134
Depreciation and amortization		1			33			—			—		34

Loss from operations		2,109			1,393			8			—		3,510

Other income		81			10			—			—		91

Loss before taxes	$	(2,028	)	$	(1,383	)	$	(8	)	$	—	$	(3,419	)