Another example of radioactivity measurements showing young earth ages. I have only copied the last of the article published by ICR.

Humphreys used the argon data from Figure 2 to compute the age of sample 5 to be 5,100+3,800 -2,100 years, where 5,100 years was his best estimate with the lowest age of 3,000 years and the oldest age of 8,900 years. Humphreys’ lower estimate of 3,000 years was the same as the estimate made by Harrison et al.4

Conclusions

Humphreys concluded that the observed high argon retentions shown in Figure 2 conflict severely with the uniformitarian-assumed long ages. These data say that the feldspar in the Fenton Hill borehole generated over a billion years’ worth of argon-40 and then retained it during a period of time that began only thousands of years ago.The argon data thus support accelerated nuclear decay, RATE’s young helium age, and the biblical youth of the world. Consequently, we can say that both argon and helium diffusion rates agree that the earth is only thousands of years old.