UPDATED VERSION
Only when you have the designated on the left may you research the tech(s) on the right hand side (fusion building excluded). If the fusion route for powering mines is not for you then simply ignore the Energy techs on the right hand side. Fusions can be done anytime in the designated mine levels.
14:12:10 ---> Astro 1 ; Energy 1,2,3,4; Fusion 1,2,3
16:13:12 ---> Astro 2 + 3; Energy 5,6,7,8 ; Fusion 4,5,6,7
16:14:13 ---> Plasma 1
17:14:13 ---> Astro 4 + 5
17:15:13 ---> Plasma 2
19:15:15 ---> Plasma 3
20:16:15 ---> Astro 6 + 7, Fusion 8,9
20:17:16 ---> Plasma 4
22:17:16 ---> Plasma 5, Fusion 10, 11
22:20:18 ---> Energy 9,10; Astro 8 + 9
23:20:18 ---> Plasma 6
24:21:20 ---> Plasma 7, Fusion 13
25:22:21 ---> Astro 10 + 11; Energy 11
26:23:21 ---> Plasma 8 & 9; Fusion 14, 15
28:24:22 ---> Astro 12 + 13; Plasma 10; Energy 12
28:25:23 ---> Plasma 11, Energy 13, fusion 16
30:26:26 ---> Astro 14 + 15; Fusion 17
32:28:26 ---> Plasma 12, Energy 14, 15; Fusion 18
33:28:28 ---> Astro 16 + 17; Energy 16
33:29:29 ---> Plasma 13, Energy 17
34:30:30 ---> Plasma 14, Energy 18; Fusion 19
35:31:31 ---> Plasma 15,
36:32:31 ---> Plasma 16, Energy 19, Fusion 19
37:33:33 ---> Energy 19, Astro 18 + 19
37:33:34 ---> Plasma 17
38:33:34 ---> Astro 20 + 21, Fusion 20
39:33:35 ---> Plasma 18, Energy 20, Fusion 21
40:34:36 ---> Astro 22 + 23, Plasma 19,
42:36:38 ---> Plasma 20
44:38:40 ---> Astro 24
45:38:41 ---> Astro 25
Now for example when you have mines of 32:28:26 you would do Plasma tech 12. then continue with mines to 33:28:28. when you have those mines you would save for the astro 16 and astro 17 techs.
Only when you have the designated on the left may you research the tech(s) on the right hand side (fusion building excluded). If the fusion route for powering mines is not for you then simply ignore the Energy techs on the right hand side. Fusions can be done anytime in the designated mine levels.
14:12:10 ---> Astro 1 ; Energy 1,2,3,4; Fusion 1,2,3
16:13:12 ---> Astro 2 + 3; Energy 5,6,7,8 ; Fusion 4,5,6,7
16:14:13 ---> Plasma 1
17:14:13 ---> Astro 4 + 5
17:15:13 ---> Plasma 2
19:15:15 ---> Plasma 3
20:16:15 ---> Astro 6 + 7, Fusion 8,9
20:17:16 ---> Plasma 4
22:17:16 ---> Plasma 5, Fusion 10, 11
22:20:18 ---> Energy 9,10; Astro 8 + 9
23:20:18 ---> Plasma 6
24:21:20 ---> Plasma 7, Fusion 13
25:22:21 ---> Astro 10 + 11; Energy 11
26:23:21 ---> Plasma 8 & 9; Fusion 14, 15
28:24:22 ---> Astro 12 + 13; Plasma 10; Energy 12
28:25:23 ---> Plasma 11, Energy 13, fusion 16
30:26:26 ---> Astro 14 + 15; Fusion 17
32:28:26 ---> Plasma 12, Energy 14, 15; Fusion 18
33:28:28 ---> Astro 16 + 17; Energy 16
33:29:29 ---> Plasma 13, Energy 17
34:30:30 ---> Plasma 14, Energy 18; Fusion 19
35:31:31 ---> Plasma 15,
36:32:31 ---> Plasma 16, Energy 19, Fusion 19
37:33:33 ---> Energy 19, Astro 18 + 19
37:33:34 ---> Plasma 17
38:33:34 ---> Astro 20 + 21, Fusion 20
39:33:35 ---> Plasma 18, Energy 20, Fusion 21
40:34:36 ---> Astro 22 + 23, Plasma 19,
42:36:38 ---> Plasma 20
44:38:40 ---> Astro 24
45:38:41 ---> Astro 25
Now for example when you have mines of 32:28:26 you would do Plasma tech 12. then continue with mines to 33:28:28. when you have those mines you would save for the astro 16 and astro 17 techs.