Problem: your minions are herbalists or miners, and can track those nodes. Unfortunately, the minimap on their screen is too small to catch a glimpse of mining nodes, unless you're watching it directly.

Solution:
1. Download SimpleMinimap (http://wow.curse.com/downloads/details/7806/)
2. Change line 5 of bindings.xml to: <Binding name="smmEXPAND" header="smmTITLE">
3. Change line 6 of bindings.xml to: simpleMinimap:ExpandMinimap()
4. Change line 341 of simpleminimap.lua to: function simpleMinimap:ExpandMinimap()
5. Change line 349 of simpleminimap.lua to: f:SetHeight(UIParent:GetHeight() * 1.0)
6. Change line 358 of simpleminimap.lua to: if (not self.expandedFrame:IsShown()) then

Now, start WoW, make sure the addon is enabled, and go into keybindings. Scroll to the bottom (simpleminimap section) and bind a key to 'expand minimap'. I have mine set to the numpad star key. Now, whenever you hit that key, your minions' minimap will be blown up to fill the entire height of the screen. This makes it much easier to see mining nodes out of the corner of your eye while running around watching the main's screen. It also helps to configure some of the other settings, like removing/repositioning the buttons around the minimap, and setting it to the 'square' skin instead of default.