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Research and Development Expenses

6 Months Ended

Aug. 31, 2023

13. Research and Development Expenses

Research and development expenses for the three-month periods ended August 31, 2023 and 2022 were as follows:

	August 31, 2023			August 31, 2022
Employee compensation	$	1,373		$	2,068
Machinery and equipment expenditures		-			1,184
External engineering		141			611
Plant and laboratory operating expenses		447			584
Tax credits		(22	)		(839	)
Other		99			143
	$	2,038		$	3,751

Research and development expenses for the six-month periods ended August 31, 2023 and 2022 were as follows:

	August 31, 2023			August 31, 2022
Employee compensation	$	2,819		$	4,355
Machinery and equipment expenditures		1,236			3,073
External engineering		1,297			2,206
Plant and laboratory operating expenses		916			1,450
Tax credits		(47	)		(908	)
Other		307			376
	$	6,528		$	10,552