Sample

eU (ppm)

eTh (ppm)

eRa (ppm)

K%

eTh/eU

Low

Radioactivity

ES1

ES3

ES4

ES6

8

8

15

11

26

24

25

22

9

4

10

5

3.0

3.2

3.85

4.16

3.25

3.0

1.7

2.0

Moderate

Radioactivity

ES2

ES5

ES8

ES9

184

180

76

163

Ud

Ud

1

Ud

133

151

66

117

1.18

1.06

1.35

1.52

<0.005

<0.005

0.01

<0.006

Anomalous

Radioactivity

ES10

ES11

2240

3725

Ud

Ud

1390

1525

Ud

Ud

<0.001

<0.001