Reference: Helium Diffusion Rates Support Accelerated Nuclear Decay Reference: Radioisotopes and the Age of the Earth First of all, this only shows that decay rates are not varying right now. In the case of Beta decay the factor is a billion fold.
Accelerated decay is now associated with two Biblical events, Creation and the Flood, and both events are literally acts of God.There are also reasons, Biblical and scientific, to associate both events with rapid space expansion and time dilation.The report containing the charts called Radiometric dates from Alaska - a 1975 compilation  is simply a chart of data with no interpretation beyond the date calculations.Now 62% of the locations had only one date and so there was nothing to compare the dates to.It turns out that the diffusion rate is about 10,000 times too fast for an old Earth, but it fits one or more bursts of accelerated decay in the past 4000 to 8000 years perfectly.
Reference: Is There Evidence to Support an Accelerated Decay Hypothesis and A Young Earth? More recent experiments have shown some degree of accelerated decay in both Alpha and Beta decay.This article (Radiometric dating falsely assumes rates are constant (Talk.Origins)) is a response to a rebuttal of a creationist claim published by Talk.Here is a chart of dating data from The Alaska Division of Geological & Geophysical Surveys .The data was collected from various locations scattered over Alaska.Origins Archive under the title Index to Creationist Claims.