For over 30 years, the U.S. Environmental Protection Agency (EPA) has used the noise reduction rating (NRR) to measure the attenuation of hearing protector devices (HPD). Based upon idealized ...

Shares of NRR stock opened at GBX 68 ($0.88) on Thursday. The stock has a 50-day simple moving average of GBX 71.67 and a 200 day simple moving average of GBX 76.56. NewRiver REIT has a fifty-two week ...

Shares of NRR stock opened at GBX 76 ($1.01) on Tuesday. The company has a debt-to-equity ratio of 90.77, a current ratio of 5.48 and a quick ratio of 3.00. The company has a market capitalization of ...