	For the Years Ended March 31,
	2021		2020
	(dollars in thousands, except per share data)
First Quarter -
Revenue	$	426,989	$	355,365
Gross Profit		102,297		78,094
Earnings from Continuing Operations Before Income Taxes		129,927		57,564
Net Earnings from Continuing Operations		97,091		43,333
Net Earnings		96,206		41,304
Diluted Earnings Per Share from Continuing Operations	$	2.34	$	0.98
Diluted Earnings Per Share	$	2.31	$	0.94
Second Quarter -
Revenue	$	447,684	$	400,569
Gross Profit		122,849		109,020
Earnings from Continuing Operations Before Income Taxes		109,671		98,367
Net Earnings from Continuing Operations		89,871		75,064
Net Earnings		96,034		71,793
Diluted Earnings Per Share from Continuing Operations	$	2.16	$	1.80
Diluted Earnings Per Share	$	2.31	$	1.72
Third Quarter -
Revenue	$	404,667	$	342,904
Gross Profit		113,379		93,203
Earnings from Continuing Operations Before Income Taxes		105,072		56,157
Net Earnings from Continuing Operations		81,193		43,474
Net Earnings		81,193		(114,632	)
Diluted Earnings Per Share from Continuing Operations	$	1.94	$	1.04
Diluted Earnings Per Share	$	1.94	$	(2.76	)
Fourth Quarter -
Revenue	$	343,302	$	305,195
Gross Profit		69,830		62,349
Earnings from Continuing Operations Before Income Taxes		79,442		43,607
Net Earnings from Continuing Operations		66,011		69,320
Net Earnings		66,011		72,429
Diluted Earnings Per Share from Continuing Operations	$	1.56	$	1.67
Diluted Earnings Per Share	$	1.56	$	1.74

Operating Earnings for our Cement, Gypsum Wallboard, and Recycled Paperboard segments were adversely affected during the fourth quarter of fiscal 2021 by a severe winter storm in February 2021. This storm had a significant impact on Texas and the broader southern United States. Our cement facilities in Texas, Missouri, and Oklahoma were forced to curtail production and energy prices spiked during this time period. We estimate the storm’s impact was approximately $6.0 million in additional cement costs during the fiscal fourth quarter. Our paper mill, which is located in Oklahoma, was forced to curtail production during the week of the storm, and also experienced higher energy costs during the shutdown. Shipments of gypsum wallboard were significantly affected by the extreme winter conditions. We estimate that the storm affected fourth quarter Light Materials sector earnings by approximately $6.0 million. Although the operating earnings of our Light Materials sector were adversely affected by the storm, we were able to curtail some of our operations and release a portion of our natural gas commitments to third parties in a timely manner. The release of these commitments contributed to a significant increase in Other Non-Operating Income (Loss) in the fiscal fourth quarter.

We are still engaged in discussions with contractual counterparties regarding the responsibility for certain charges and obligations arising as a result of the storm. It is therefore it is not possible at the present time to make a final determination as to the storms impact on the financial results of our cement facilities and Light Materials sector.

The third quarter of fiscal 2020 included a pre-tax impairment loss of approximately $25.1 million related to assets included in our Oil and Gas Proppants segment. These assets were not included in the sale of the Oil and Gas Proppants business in September 2020. See Footnotes (A) and (C) for more information.

The fourth quarter of fiscal 2020 included pre-tax costs related to business development and separation costs of approximately $6.5 million, outage and purchase accounting costs at Kosmos Cement Company of approximately $6.8 million, and plant expansion costs at our recycled paper mill of approximately $3.0 million. The outage and purchase accounting costs and expansion costs are included in Cost of Goods Sold, while the business development and separation costs are included in Corporate, General, and Administrative Expense on our Consolidated Statement of Earnings. The Company also recorded a $31.7 million net income tax benefit related to the CARES Act during the fourth quarter. See Footnote (J) for more information about the CARES Act.