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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
 3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
Components of net periodic benefit cost (benefit) included in net loss are as follows:
Pension BenefitsOther Benefits
Three Months Ended March 31,Three Months Ended March 31,
(in thousands)2025202420252024
Interest cost$10,224 $10,808 $63 $70 
Expected return on plan assets(9,683)(11,200)— — 
Amortization of prior service cost78 53 71 173 
Benefit plans, net (1)
619 (339)134 243 
Service cost included in COS (2)
195 171 5 4 
Net periodic benefit cost (benefit)$814 $(168)$139 $247 
(1) Benefit plans, net, which is presented separately in the Condensed Consolidated Statements of Operations, is not allocated to the segments.
(2) Service cost related to a small group of active participants is presented within Cost of operations in the Condensed Consolidated Statements of Operations and is recorded at the B&W Thermal segment level.

There were no MTM adjustments for the pension and other postretirement benefit plans during the three months ended March 31, 2025 and 2024.
We made contributions to the pension and other postretirement benefit plans totaling $3.7 million and $0.3 million during the three months ended March 31, 2025 and 2024, respectively.