diff --git a/commands.go b/commands.go
index d80d0d2..efa613b 100644
--- a/commands.go
+++ b/commands.go
@@ -200,8 +200,10 @@ var colonizeCommand = &Command{
 		var fn func()
 		fn = func() {
 			reward := int64(rand.NormFloat64()*5.0 + 100.0*system.miningRate)
-			system.colonizedBy.money += reward
-			fmt.Fprintf(system.colonizedBy, "mining colony on %s pays you %d space duckets. total: %d space duckets.\n", system.name, reward, system.colonizedBy.money)
+			if system.colonizedBy != nil {
+				system.colonizedBy.money += reward
+				fmt.Fprintf(system.colonizedBy, "mining colony on %s pays you %d space duckets. total: %d space duckets.\n", system.name, reward, system.colonizedBy.money)
+			}
 			After(5*time.Second, fn)
 		}
 
@@ -329,9 +331,10 @@ func init() {
 	registerCommand(colonizeCommand)
 	registerCommand(commandsCommand)
 	registerCommand(gotoCommand)
-	registerCommand(mineCommand)
 	registerCommand(helpCommand)
 	registerCommand(infoCommand)
+	registerCommand(mineCommand)
 	registerCommand(nearbyCommand)
 	registerCommand(scanCommand)
+	registerCommand(mkBombCommand)
 }
diff --git a/system.go b/system.go
index 88ee3a4..ae808e8 100644
--- a/system.go
+++ b/system.go
@@ -3,6 +3,7 @@ package main
 import (
 	"database/sql"
 	"fmt"
+	"io"
 	"math"
 	"math/rand"
 	"time"
@@ -187,12 +188,13 @@ func randomSystem() (*System, error) {
 }
 
 type scanResults struct {
-	life       bool
-	miningRate float64
+	life        bool
+	miningRate  float64
+	colonizedBy *Connection
 }
 
 func (r *scanResults) negative() bool {
-	return !r.life
+	return !r.life && r.colonizedBy == nil
 }
 
 func (r *scanResults) String() string {
@@ -202,6 +204,15 @@ func (r *scanResults) String() string {
 	return "(none)"
 }
 
+func (r *scanResults) write(w io.Writer) {
+	if r.life {
+		fmt.Fprintf(w, "\tlife detected\n")
+	}
+	if r.colonizedBy != nil {
+		fmt.Fprintf(w, "\tmining colony owned by %s\n", r.colonizedBy.PlayerName())
+	}
+}
+
 func scanSystem(id int, reply int) {
 	system := index[id]
 	source := index[reply]
@@ -212,7 +223,8 @@ func scanSystem(id int, reply int) {
 		fmt.Fprintf(conn, "scan detected from %s\n", source.name)
 	})
 	results := &scanResults{
-		life: len(system.players) > 0,
+		life:        len(system.players) > 0,
+		colonizedBy: system.colonizedBy,
 	}
 	After(delay, func() {
 		deliverReply(source.id, system.id, results)
@@ -228,7 +240,8 @@ func deliverReply(id int, echo int, results *scanResults) {
 		if results.negative() {
 			return
 		}
-		fmt.Fprintf(conn, "scan results from %s (%v away): %v\n", source.name, delay, results)
+		fmt.Fprintf(conn, "scan results from %s (%v away):\n", source.name, delay)
+		results.write(conn)
 	})
 }